roof erector’s handbook - dezzo roofing · with the roof layout supplied by the prefabricated...

Roof Erector’s Handbook

For the installation and bracing ofpre-fabricated timber roof trusses

Volume 2

Including large span roofs

Published by the Institute forTimber Construction South Africa

© 01-07-2001

Erector

Revised Edition 2010/11

Erector’s name

Region

Cell number

Email address

Certificate of Competence no.

Photo/Company Stamp

PAGE 1PAGE 1

FOR A SAFE, LEGAL ROOF!

Erector

Roof Erector’s HandbookFOR ERECTING PREFABRICATED TIMBER ROOF TRUSSES

VOLUME TWO - ADVANCED LEVELFor All Category Carpenters (ITC Rating)

Text edited by Victor Booth Pr. Eng. Amended drawings by Stefan Münster

Original drawings courtesy of: International Truss Systems (Pty) Ltd.

First Edition July 2001All copyright reserved by the Institute for Timber Construction

INTRODUCTION

The details in this handbook are a compilation of erection and bracing details that are issued with the roof layout supplied by the Prefabricated Timber Truss Fabricator as part of the site documentation or incorporated in the workshop drawings. These details cover nearly all the standard aspects of erecting and bracing all categories of timber roofs.

Alternative details may be issued by the design engineer, in which case these details override those published in this book for the particular structure that they have been designed for.

All trusses and all bracing requirements must be shown on the roof plan supplied by the truss manufacturer.

Prevailing conditions must be considered where it may be necessary for the specification of corrosion proofed nails for securing of metal bracing strap, metal connectors, hangers and fixing of timber members.

The Magisterial districts or towns specified for treatment of sawn timber as published in SANS 10005:1994 (SABS 05:1994) could be used as a guideline for use of corrosion proofed nails where doubt exists.

Note: All metal bracing, hangers, clips and the like must be fixed strictly in accordance with the manufacturer’s instructions.

Published by the Institute for Timber Construction-South AfricaP.O. Box 686, ISANDO 1600, South Africatel: +27 (0)11 974-1061fax: +27 (0)11 392-6155toll free:

email: [email protected]

o

0800TIMBER846237

website: www.itc-sa.org

Mitek SA (Pty) Ltd.

Alpine Automation SA (Pty) Ltd.

PAGE 2PAGE 1

Erector

FOREWORD

ITC-SA gives recognition to engineers with substantial experience and proven competence in timber engineering by accepting them as Engineer members. In order to ensure full compliance with all the provisions of both the National Building Regulations & Building Standards Act [Section 14 (2A)] and National Building Regulations [Clause A19]. These engineers may appoint, train and regularly re-train Inspectors to inspect erected Timber Roof Structures on their behalf.

PAGE 3

Engineer

to:Raise standards in the Nail Plated Timber Roof Truss Industry t h r o u g h the development and supportive enforcement of appropriate technical, quality and ethical standards.Monitor adherence by ITC-SA members of relevant industry related standards, SANS specifications and Codes of Practice and in so doing act as a protector of consumer interests.Foster and promote all ITC-SA members interests through appropriate advertising and publicity by facilitating training and lobbying at all relevant levels and forums.

The Institute for Timber Construction South Africa's - ITC-SA's - mission is

The ITC-SA Engineering Systems who are members of the ITC-SA, namely Alpine Automation South Africa (Pty) Ltd, International Truss Systems (Pty) Ltd, MiTek Industries S.A. (Pty) Ltd, and © 2009 Multinail Africa (Pty) Ltd, have all developed computer software capable of designing timber roof structures in compliance with the relevant design codes of practise. The Systems ensure competent use of their design software through training of their licensed Fabricators. The Systems also manufacture and supply the connector nail-plates and other necessary brackets and hardware upon which the software design criteria is based.

Fabricators/Truss Plants are licensed by the Engineering Systems to design and manufacture pre-fabricated, mono-planar nail-plated roof structures. They are audited by the ITC-SA on an annual basis to ensure compliance with ITC-SA requirements and the National Building Regulations and to achieve a Certificate of Compliance for Truss Manufacture.

To further assist in developing the standards within the industry, ITC-SA presents a duel level estimator/designer course which upgrades the quality and competency of personnel in truss plants.

ITC-SA approves Erectors who have undergone work evaluations and training in order to achieve a Certificate of Competence for Erectors. Of particular relevance is their understanding and correct application of the bracing rules as contained in the Roof Erector's Handbooks Volumes 1 & 2, which are continuously re-evaluated and updated through ITC-SA facilitation. These bracing details have been included in SANS10243 (The Manufacture and Erection of Timber Trusses) and some are also included in SANS 10400 “The Application of the National Building Regulations”- part L.

ITC-SA approved Engineers appoint and train Inspectors to inspect roof structures. The Engineers accept responsibility for the design and structural stability of the roofs after inspection and approval of the roofs by the Inspectors. This process is in compliance with Regulation A19 of the National Building Regulations, which then enables the home owner to obtain an occupancy certificate from the local authority.

PAGE 4

Inspector

Fabricator

Erector

INDEXPART # DESCRIPTION PAGE #

Part One Connection Details 6 - 40

Part Two Bracing Details 41 - 74

Part Three Inspection Checklist 75 - 76

Part Four Standard Remedials 77 - 84

Part Five Glossary of Terms 85 - 87

Glossary1 88

Typical Corbeling Detail 89

Geyser Platform Parallel & Perpendicular 90 - 91

Solar Panel Detail 92

Part Six Notes & Membership Application 93 - 94

That all the details

contained in this manual

are “deemed-to-satisfy”

details and that they

may be superseded by

any alternative detail

issued by a competent

a n d e x p e r i e n c e d ,

r e g i s t e r e d t i m b e r

Engineer or by any

details issued to the site

for the particular project.

Please note:

ERECTION TOLERANCES

PURLIN CONNECTIONS & SPLICES

HEEL SUPPORT CONDITIONS

TRUSS HOLDING DOWN DETAILS

CONNECTION OF MULTIPLE PLY GIRDERS

GIRDER-BATTEN/PURLIN & ANTI-TORSION

VARIOUS HANGERS

VARIOUS MILD STEEL CLEATS

FULL HIPS -45 & 90 DEGREE

TRUNCATED HIPS -45 & 90 DEGREE

DUTCH HIP & PART GABLE HIP

HIP/VALLEY & MONO-PITCH HIP

CORNER HIPS

HIP CONNECTION DETAILS

FLY RAFTER CONNECTIONS

HIP END FASCIA SUPPORT BEAM

BATTEN / PURLINS OVER HIP RAFTER

VALLEY T.C. RESTRAINT DETAILS

VALLEY T.C. RESTRAINT + FRAMES

VALLEY T.C. RESTRAINT DETAILS

VALLEY TRUSS END SUPPORT DETAIL

CRANKED ROOF DETAILS

CRANKED TRUSS SUPPORT DETAILS

GEYSER PLATFORM DETAILS

150L GEYSER SUPPORT ON TRUSSES < 8m

SCISSOR TRUSSES

GABLE LADDER DETAILS

PIGGY BACK DETAILS

PIGGY BACK TRUSS CONNECTION DETAILS

ATTIC TRUSS DETAILS

COMPOSITE ATTIC TRUSS DETAILS

COMPOSITE ATTIC TRUSS DETAILS

OLD ENGLISH & FRENCH DORMER

MODERN ENGLISH & EYEBROW DORMER

ERECT1

PURLIN1

HEEL1

WALLTIE

GIRDER1

GIRDER2

HANGER1

CLEATS1

HIP1

HIP2

HIP3

HIP4

HIP5

HIP6

HIP7

HIP8

HIP9

VALLEY1

VALLEY1A

VALLEY2

VALLEY3

CRANK1

CRANK2

GEYSER1

GEYSER2

GABLE

P-BACK1

P-BACK2

ATTIC1

ATTIC2

ATTIC3

DORMER1

DORMER2

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

CONTENTSPart One Connection Details

PAGE 6

PAGE # DETAIL REF. DESCRIPTION

SLIDING SHOE

(Please also refer to pages 12 a,b,c and d)

DETAIL REF.: ERECT 1

ERECTION TOLERANCES

TRUSSES MUST BE ERECTED PLUMB, LEVEL AND ALL CHORDS MUST BE STRAIGHT

PAGE 7

FULL SIZE (SCALE 1:1) SECTION OF 36 X 111 RAFTER AT 30 DEGREE

SLOPE SHOWING MAXIMUM OUT OF PLUMB TOLERANCE ALLOWED

= LESS THAN 3 MM OFF CENTRE.

TOLERANCE IS CRITICAL FOR BOTH A GOOD ROOF LINE AND EFFECTIVE BRACING.

A GUTLINE, PLUMBLINE OR LEVEL SHOULD BE USED.

1. TRUSSES TO BE ERECTED WITH OVERALL BOW IN ITS TOTAL RAFTER LENGTH LESS THAN

L/200 AND LESS THAN 50MM (L = CHORD LENGTH). THE BOW BETWEEN BATTENS OR

PURLINS MUST BE LESS THAN Lp/100 (Lp = BATTEN/PURLIN SPACING).

2. TRUSSES TO BE ERECTED WITH APEX NOT MORE THAN THE LESSER OF SPAN/200 OR

HEIGHT/50 FROM A VERTICAL PLANE THROUGH ITS SUPPORTS.

3. AT ANY SECTION, THE LOCAL OUT OF PLUMB SHOULD NOT EXCEED HEIGHT/50 OR 50MM.

WHICHEVER IS THE LESSER.

GENERALLY, IF A BOW OR TILT IS EVIDENT TO THE EYE, THE TRUSS HAS PROBABLY BEEN

ERECTED OUTSIDE THE TOLERANCES.

REV.: 122-04-2010

Truss

Truss

Pu

rlin

- B

atte

n

DETAIL REF.: PURLIN 1PAGE 8

• •

••

••

•

•

••

HURRICANE CLIP CONNECTION:

ALL HURRICANE CLIPS TO BE FULLY NAILED WITH CLOUT OR SERRATED NAILS

PURLIN

100mm NAILSKEW NAILED

RAFTER

HURRICANE CLIP

•

1 OFF 100mm SKEW DRIVEN NAIL AND TIED WITH 2.4 DIA. GALVANISED WIRE BOUND TWICE AT EACH CONNECTION

WIRE BOUND CONNECTION:

PURLIN

RAFTER

2.4 DIA GALVANISEDWIRE - DOUBLE

100mm NAILSKEW NAILED

•

SWING FIX CLIP CONNECTION:

4mm x 125mm NAIL

PURLIN

RAFTER 2 No. 3.25mm SWINGFIX CLIPS - DOUBLE

1 OFF 4mm x 125mm VERTICAL NAIL & 2 OFF 3.25mm SWING FIX CLIPS FIXED AT EACH CONNECTION.

1 OFF FULLY NAILED HURRICANE CLIP PER CONNECTION. AT ALL OTHER CONNECTIONS HURRICANE CLIPS TO BE STAGGERED.

HURRICANE CLIPS

PLAN VIEW ON PURLINS

2 OFF FULLY NAILED HURRICANE CLIPS PER CONNECTION AT ALL EAVES, OVERHANG PURLINS, RIDGE PURLINS AND GABLE ENDS. (I.E. PERIMETER CONNECTIONS).

NOTE:

1. ALL PURLINS TO BE PLACED ON EDGE AND ERECTED TO THE CENTRES AS SPECIFIED ON THE TRUSS DESIGN.

2. PURLIN SPLICING TO BE STAGGERED. (REFER TO DETAILS BELOW FOR SPLICING OF PURLINS)

3. ONE OR TWO HURRICANE CLIPS PER CONNECTION AS PER PLAN VIEW ABOVE.

4. ALL HURRICANE CLIPS MUST BE FULLY NAILED WITH EITHER CLOUT NAILS OR SERRATED NAILS INTO EACH MEMBER. (I.E. TRUSS AND PURLIN).

VARIOUS 50 x 76 PURLIN CONNECTION OPTIONS

NOTE: IF ALTERNATE DETAILS ARE SUPPLIED BY THE DESIGN ENGINEER, THEY TAKE PREFERENCE TO THE ABOVE

TIMBER BLOCK SPLICE PLAN

PLATED SPLICE ELEVATION

PURLIN SPLICE DETAILS

6 OFF 3.5mm DIA. x 90mm WIRE NAILS

50

mm

50

mm 600 LG

FACTORY OR SITE APPLICATION PLATE TO BOTH SIDES

TO SYSTEM SPEC.

76

mm

PURLINS

WALL PLATE APEX

TR

US

SE

S

EAVES

•••

••

REV.: 223-04-2010

TOP CHORD

BOTTOM CHORD

WEB

DETAIL REF.: HEEL 1PAGE 9

MAX WALL PLATEPOSITION FROMHEEL POINT WITHINSCARF DISTANCE

SCARF DISTANCE

LIMIT OF WALL PLATE POSITIONINGNOTE: ANY SUPPORT OUTSIDE THE SCARF LENGTH IS A SPECIAL SUPPORT CONDITION

SPECIAL SUPPORT CONDITION BEYOND SCARF = CANTILEVER

NOTE: ALL CANTILEVERS MUST BE DESIGNED AS SUCH

TOP CHORD

BOTTOM CHORD

SPECIAL SUPPORT CONDITION ON OVERHANG = TOP CHORD SUPPORT

NOTE: ALL TOP CHORD SUPPORTS MUST BE DESIGNED AS SUCH

TOP CHORD

BOTTOM CHORD

THIS WEB IS THE MAJOR COMPRESSION MEMBER AND CAN SLIDE ALONG THE BOTTOM CHORD WHEN ANGLE OF WEB IS VERY SHALLOW AND CONNECTOR PLATE IS SMALL

REV.: 223-04-2010

MINIMUM PLATE SIZE RECOMMENDED IS 75MM x 150MM

DETAIL REF.: WALLTIE

TRUSS HOLDING DOWN DETAILS

PAGE 10

TILED ROOFS = 4 NO 32mm CLOUT

NAILS INTO TOP AND OPPOSITE SIDE.

SHEETED ROOFS = 8 NO 32mm CLOUT

NAILS INTO TOP AND OPPOSITE SIDE.

HOOP IRON STRAP BUILT INTO

BRICKWORK OR CAST INTO R.C.

BEAM IN ACCORDANCE WITH

SANS 10400 KK 13.3

NOTE: 25mm x 1mm PRE-PUNCHED STRAP MAY BE USED FOR HEAVY TILE

ROOFS OR LIGHT ROOFS UP TO 8m SPAN IN LOW WIND RISK, BUILT UP AREAS.

FOR SHEETED ROOFS AT LESS THAN 17.5 DEGREE PITCH AND/OR

SPANNING MORE THAN 10m THE HOLD DOWN MUST BE DESIGNED.

DETAIL TO BE USED WHEN HOOP IRON

IS FURTHER THAN 200mm FROM TRUSS

HOOP IRON STRAP FIXED TO WALL WITH 5 NO. EVENLY

SPACED MASONRY PINS AND PLASTERED OVER.

VERTICAL SHELF OF SIZE EQUAL TO TRUSS

TOP CHORD SIZE FIXED BETWEEN TRUSSES.

SHELF BETWEEN TRUSSES

MUST BE FIXED WITH ONE 90°

TRUSS HANGER AT EACH END

HOOP IRON WRAPPED

OVER SHELF AND FIXED

WITH 8 NO CLOUT NAILS

ALL FULLY NAILED

REV.: 123-04-2010

( ALTERNATIVELY TILED ROOFS

MAY HAVE 2No 2.4mm DIA. WIRE)

DETAIL REF.: GIRDER 1

ANTI-SPLIT PLATES

CENTER

EQ.EQ.EQ.EQ.

150

150

150

150

300

300

150150150150

CONNECTION DETAILS FOR TWO, THREE AND FOUR PLY GIRDERS

PAGE 11

TWO PLY GIRDER

DOUBLE MEMBER GIRDER TO BE NAILED TOGETHER WITH 100mm NAILS AT 150mm CENTRES REELED PITCH ALONG TOP AND BOTTOM CHORDS AND AT 300mm CENTRES ALONG THE CENTRE LINES OF WEBS. BOLT WITH 1 NO. M12 BOLT AND WASHERS AT EACH JOINT ALONG THE CENTRE LINES OF CHORDS. ALL TRUSS HANGERS AND CLEATS TO BE BOLTED AS PER DESIGNER SPECIFICATIONS. (AS SHOWN ON THE TRUSS DETAILS AND ROOF PLAN)

THREE PLY GIRDER

TW0 TRUSSES TO BE NAILED TOGETHER WITH 100mm NAILS AT 150 mm CENTRES REELED PITCH ALONG TOP AND BOTTOM CHORDS AND AT 300 mm CENTRES ALONG THE CENTRE LINES OF WEBS. THIRD MEMBER THEN TO BE SIMILARLY NAILED ONTO DOUBLE TRUSS. BOLT WITH 1 NO. M12 BOLT AND WASHERS AT EACH JOINT ALONG THE CENTRE LINES OF CHORDS. ALL TRUSS HANGERS AND CLEATS TO BE BOLTED AS PER DESIGNER SPECIFICATIONS. (AS SHOWN ON THE TRUSS DETAILS AND ROOF PLAN)

FOUR PLY GIRDER

TWO TRUSSES TO BE NAILED TOGETHER WITH 100mm NAILS AT 150 mm CENTRES REELED PITCH ALONG TOP AND BOTTOM CHORDS AND AT 300 mm CENTRES ALONG THE CENTRE LINES OF WEBS. THIRD AND FOURTH MEMBER THEN TO BE SIMILARLY NAILED TO EITHER SIDE OF DOUBLE TRUSS. BOLT WITH 1 NO.M12 BOLT AND WASHERS AT EACH JOINT ALONG THE CENTRE LINES OF CHORDS. ALL TRUSS HANGERS AND CLEATS TO BE BOLTED AS PER DESIGNER SPECIFICATIONS. (AS SHOWN ON THE TRUSS DETAILS AND THE ROOF PLAN)

REV.: 223-04-2010

DETAIL REF.: GIRDER 2

TRUSS MUST BUTT FIRMLYAGAINST GIRDER

GIRDER

(1PLY)

(2PLY)

(3PLY)

OR

(4PLY)

TRUSS

PRE-PUNCHED STRAP TO BE PULLED TIGHT WHEN FIXING CLOUT NAILS

15 CLOUT NAILS INTO GIRDER

15 CLOUT NAILS INTO TRUSS

1. FOR BATTENS SPACED AT LESS THAN400mm c/c CONNECT EVERY 2ND BATTEN TO GIRDER WITH A PAIR OF METAL ANGLE CLIPS OR SIMILAR BRACKETS ON OPPOSITE SIDES AS SHOWN. SELECT BATTENS THAT ARE CONTINUOUS OVER BRACED BAYS.

2. WHERE NO CLIPS CAN BE USED DUE TO TILE UNDERLAY / DAMP PROOFING LAYER USE 38x76 (GRADE5) RUNNERS AT 600mm CENTERS NAILED TO EACH PLY TO UNDERSIDE OF TOP CHORD AND OVER TWO ADJACENT TRUSSES. TWO 7 5 m m W I R E N A I L S P E R CONNECTION. (I.E. FOUR PLY = EIGHT NAILS - TWO NAILS INTO EACH PLY)

GIR

DE

R TRUSS

BATTEN/PURLIN CONNECTION DETAIL FOR THREE AND FOUR PLY GIRDERS

TORSIONAL RESTRAINT STRAP DETAIL TO BE INSTALLED WHEN THE INCOMING TRUSS SPAN

IS 6.0m OR GREATER ON ALL VALLEY GIRDERS IRRESPECTIVE OF THE NUMBER OF PLIES

PAGE 12

GENERAL VIEW

NB: NAIL BATTEN / PURLININTO EVERY PLY OF GIRDER

3. FOR PURLINS (USUALLY SPACED AT MORE THAN 800mm c/c) CONNECT EACH PURLIN WITH FOUR HURRICANE CLIPS PER CONNECTION.

REV.: 212-05-2010

HANGER/CLEAT BOLTED THROUGH ALL PLIES OF GIRDER

aREV.: 0

15-12-2010

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E)

VALLEY - (ALTERNATIVE)METAL SHEETING OPTIONREV.: 0

15-12-2010

DETAIL REF.: HANGER 1

TYPICAL 90 DEGREE TRUSS HANGERS

90 DEGREE MINI-HANGERS FOR LIGHT LOADS

TYPICAL 90 DEGREE 50/80mm WIDE HANGERS

45 DEGREE TRUSS HANGERS

IMPORTANT:

INSTALL ALL

HANGERS

STRICTLY

ACCORDING

TO THE

MANUFACTURER’S

SPECIFICATIONS

THE HANGER

TYPE AND SIZE

FOR EACH

TRUSS

CONNECTION

MUST BE

SHOWN

ON THE

ROOF

LAYOUT PLAN

PAGE 13

USE:M12 BOLTS + WASHERS& / OR 2.8 mm x 32 mm CLOUT NAILS IN EVERY HOLE.

USE:M12 BOLTS + WASHERS & / OR 2.8 mm x 32 mm CLOUT NAILS IN AS M A N Y H O L E S A S POSSIBLE.

REV.: 223-04-2010

36X36 X4MMSQUARE WASHER

BOLTEDOPTION

LEFT HANDTRUSS HANGER

FULLY NAILEDOPTION

RIGHT HANDTRUSS HANGER

DETAIL REF.: CLEATS 1

VARIOUS MILD STEEL CLEATS (TYPICAL VALUES CHECK WITH MANUFACTURER)

PAGE 14

(TYPICAL APPLICATION – PLY OF INCOMING TRUSSES MAY VARY.)

FLANGE FOR FIXING INCOMING TRUSS (FLANGE LENGTH MAY VARY)

12.2KN CLEAT

CLEATS FOR 90 DEGREEINCOMING TRUSSES

(6.8KN CLEAT) (20.3KN CLEAT) (25.7KN CLEAT)

CLEATS FOR 45 DEGREE INCOMING HIP GIRDERS

ALL HOLES IN THE CLEATSHOULD BE BOLTED.

GENERAL RULE:

GIRDER TRUSSBOTTOM CHORD

M12 BOLTS& WASHERS

CLEATSECTION X-X

PLAN VIEW

INCOMING TRUSSx

x

REV.: 001-07-2001

DETAIL REF.: HIP 1

90 DEGREE INFILL HIP

45 DEGREE INFILL HIP

PAGE 15

ISOMETRIC VIEW PLAN VIEW


REV.: 112-05-2010

TRUSS MARKS WILL VARY FROM SYSTEM TO SYSTEM


DETAIL REF.: HIP 2

90 DEGREE INFILL TRUNCATED HIP

45 DEGREE INFILL TRUNCATED HIP

PAGE 16



REV.: 112-05-2010



DETAIL REF.: HIP 3

PART GABLE HIP

DUTCH OR LOUVRE HIP

PAGE 17



REV.: 113-05-2010



DETAIL REF.: HIP 4

45 DEGREE INFILL MONO-PITCH HIP

HIP AND VALLEY COMBINATION

PAGE 18

VALLEY BRACING NOT SHOWN FOR CLARITY SEE DETAILS VALLEY 1/2/3 - PAGE 24/25/26


ISOMETRIC VIEW

PLAN VIEW

REV.: 113-05-2010



DETAIL REF.: HIP 5

45 DEGREE INFILL TRUNCATED CORNER HIP

90 DEGREE INFILL TRUNCATED CORNER HIP

PAGE 19



REV.: 213-05-2010



DETAIL REF.: HIP 6

TRUNCATED HIP CONNECTION DETAILS (ALSO APPLIED TO OTHER HIP TYPES)

PAGE 20

ROOF PLAN

DETAIL X SECTION Y-Y

NB:

T H E R E Q U I R E D

HANGER OR CLEAT

TYPE FOR EACH

CONNECTION MUST

ALWAYS BE SHOWN

ON THE ROOF PLAN

SEE DETAILS ON NEXT PAGE

PU

NC

HE

D S

TR

AP

TO

BE

AT

30

0m

m c

/c A

LO

NG

VE

RT

ICA

L

TO

WA

RD

S

TH

E

AP

EX

BOLT +

WASHER

STRAPPING TO BE PULLED TIGHT AND THEN FULLY NAILED, TO BE IMPLEMENTED FOR SHEETED ROOFS ONLY

REV.: 213-05-2010

DETAIL REF.: HIP 7

HURRICANE CLIP CONNECTION OF FLY RAFTER & TRUNCATED TRUSS

PRE-PUNCHED STRAP CONNECTION OF FLY RAFTER & TRUNCATED TRUSSO R S I N G L E P L Y G I R D E R S

PRE-PUNCHED STRAP CONNECTION OF FLY RAFTER & TRUNCATED 2 PLY GIRDERS

PRE-PUNCHED STRAP CONNECTIONOF FLY RAFTER & TRUNCATEDT H R E E & F O U R P LY G I R D E R S

PRE-PUNCHED STRAP CONNECTION OFBUTT RAFTER AND TRUNCATED THREE AND FOUR PLY GIRDERS. (TOP CHORDS AT THE SAME LEVEL)

PRE-PUNCHED STRAP CONNECTION OFJACK TOP CHORD & HIP GIRDERS WHERE HORIZONTAL HOLDING IS NEEDED (CANTILEVER HIP ENDS)

TOP CHORD CONNECTION DETAILS FOR VARIOUS SITUATIONS

PAGE 21

1 NO. HURRICANE CLIP FULLY NAILED WITH CLOUT NAILS

NOTE:TRUSS RAFTERS TO FIT TIGHTLY AGAINST EACH OTHER

4 NO. CLOUT NAILS


6 NO. CLOUT NAILS

1.2mmx25mm PRE-PUNCHED STRAP 500MM LONG PRE-PUNCHED STRAP LENGTH TO SUIT (+1.2 TO 1.8m)

NOTE:T R U S S RAFTERS TO FIT TIGHTLY A G A I N S T EACH OTHER

PRE-PUNCHED STRAP LENGTH TO SUIT

(± 1.2 TO 1.8 m)PRE-PUNCHED STRAP – 500mm LONG FIX TO JACK TRUSS, OVER HIP GIRDER AND NAILED TO SIDE OF TOP CHORD OF HIP GIRDERS.


6 NO.

CLOUT

N A I L S

REV.: 213-05-2010

DETAIL REF.: HIP 8

FASCIA BEAM DETAIL TO SUPPORT OVERHANG RAFTERS

WHEN OVERHANG EXCEEDS TRUSS SPACING

PAGE 22

SPECIAL NOTE:

3 T ILE OVERHANG USE

38x152mm FASCIA BEAM WITH

SINGLE BRACING STRAP.

4 T ILE OVERHANG USE

38x228mm FASCIA BEAM WITH

DOUBLE BRACING STRAP.

USE PUNCHED STRAP AS SHOWN USING 10 NAILS INTO THE HIP GIRDER RAFTER AND 10 NAILS INTO EACH FASCIA BEAM

REV.: 113-05-2010

DETAIL REF.: HIP 9

CONNECTION OF BATTEN OR PURLIN TO SINGLE PLY HIP GIRDERS OR RAFTERS.

PAGE 23

BATTEN OR PURLIN

HIP GIRDER / RAFTER

JUTS OUT ABOVE TOP

CHORD LEVEL OF THE

O T H E R T R U S S E S

HIP GIRDER / RAFTER AND

TRUSS TOP CHORDS AT

T H E S A M E L E V E L

38X38 BEARER NAILED

TO TRUSS WITH 75mm

N A I L S AT 2 0 0 c / c

SECTION ON HIP TRUSS

ALTERNATIVE FIXING METHOD

75mm WIRE NAILS

OR

JACK TRUSSES

BATTENS OR PURLINS

HIP TRUSS

HIP GIRDER OR RAFTER

BATTEN OR PURLIN MITRE CUT TO TIGHT

FIT ON TOP OF RAFTER AND SKEW NAILED

REV.: 001-07-2001

TILED ROOFS UP TO 9.0 MET R SPAN

CONCRETE, ASBESTOS, METAL, CLAY OR SLATE

FIX 38 x 38 RUNNERS BETWEEN VALLEY TRUSSES

TO UNDERSIDE OF RAFTER WITH 2 No. 3.5mm DIA. X

75mm NAIL AT EACH CONNECTION, TO EXTEND

UP TO AT LEAST ONE FULL TRUSS SPACING PAST

VALLEY LINE. (2ND FULL TRUSS PAST VALLEY LINE)

E

DETAIL REF.: VALLEY 1

INTERMEDIATE VALLEY RUNNERS FOR TILES AND SHEETING

PAGE 24

SHEETED ROOFS

WHEN VALLEY TRUSS c/c IS GREATER THAN PURLIN

CENTERS INSTALL 38 X 76 (GRADE5) RUNNERS

AS PER TILED ROOFS. FIX VALLEY TRUSSES TO

RAFTERS WITH 2 NO. HURRICANE CLIP AT EACH

CONNECTION FULLY NAILED WITH 32mm CLOUT

NAILS.

N.B.

38 X 76 (GRADE5) WEB STIFFENERS

REQUIRED ON ALL VALLEY WEBS THAT

EXCEED 1800mm REFER WEB BRACING

DETAILS

1 NO. 3.5 DIA. X 75mm NAILS

PER 38 X 38 RUNNER

2 NO. 3.5 DIA. X 75mm NAILS

PER 38 X 76 RUNNER

VALLEY RUNNER SP ICEL

PLAN VIEW

REV.: 113-05-20101

ALTERNATIVE:

FIX ONE STIFFENER FRAME SET

TO BOTH SIDES OF THE VALLEY

NB PHYSICAL ACCESS THROUGH VALLEY AREA IS DIFFICULT. ACCESS CAN BE MADE EASIER IF THE VALLEY RUNNERS ARE PLACED UNDERNEATH THE VALLEY TRUSSES

ALTERNATIVE:

FIX ONE STIFFENER FRAME SET

TO BOTH SIDES OF THE VALLEY

DETAIL REF.:VALLEY3

VALLEY RUNNERS FOR TILED ROOFS OVER 9.0m SPAN WHERE THE STIFFENER FRAME IS WITHIN THE VALLEY LINES

PLAN VIEW

VALLE

Y TR

US

SE

S

TRUSS HANGERS

VT1

VT2

VT3

GIRDER TRUSSTRUSS

RID

GE

VALLEY RUNNERS

2 NO.3.5 DIA.X 75mm NAILS

PER 38 X 76 RUNNER

RAFTER

VALLEY RUNNER SPLICE

TRUSS

VALLEY TRUSSES

GIRDER TRUSS

WALLPLATE

TRUSSES

WALLPLATE

VALLEY

RUNNERS

(SEE NOTES)

VALLEY TRUSS

ONE100mmSKEW NAILNAILED TOTOP CHORD

ALTERNATIVE:200mm LONG BLOCK

FIXED WITH TWO75mm WIRE NAILSTO TRUSS BELOW

PURLIN

TOP CHORD OF TRUSS BELOW

CONTINUOUSBATTEN OR

VALLE

Y R

UN

NE

RS

STIFFENER

FRAME

STIFFENER

FRAME ANDSUPPORT

BATTEN

VALLEY RUNNER

SPACING

STIFFENERFRAME

DETAIL REF.: VALLEY 1APAGE 25

TILED ROOFS OVER 9.0m SPAN

WHEN THE STIFFENER FRAME LIES WITHIN THE VALLEY LINES, 38 x 76 RUNNERS MUST BE FIXED UNDERNEATH T H E VA L L E Y T R U S S E S T O T H E UNDERSIDE OF RAFTER WITH 2No. 3.5mm DIA x 75mm NAILS AT EACH CONNECTION.

THE RUNNERS MUST EXTEND AT LEAST TWO FULL TRUSS SPACINGS PAST THE VALLEY LINE.

RUNNERS ARE PLACED UNDER THE VALLEY TRUSSES TO MAKE IT POSSIBLE TO GAIN ACCESS TO THE ROOF SPACE BEYOND THE VALLEY AND GIRDER.

N. B.38 X 76 (GRADE5) WEB STIFFENERS REQUIRED ON ALL VALLEY WEBS THAT EXCEED 1800mm REFER WEB BRACING DETAILS

REV.: 213-05-2010

DETAIL REF.: VALLEY 2

TOP CHORD BRACING OF TRUSSES UNDER VALLEY

PAGE 26

TILED ROOFS

FOR HEAVY TILED ROOFS WHERE WIND UPLIFT WILL NOT

OCCUR, THE HURRICANE CLIP CONNECTION OF THE

VALLEY TRUSS IS NOT REQUIRED.

SHEETED ROOFS

WHEN VALLEY TRUSS c/c IS GREATER THAN PURLIN CENTRES

INSTALL ADDITIONAL 38X76 (GRADE5) RUNNERS MIDWAY

BETWEEN VALLEY TRUSSES AND PROVIDE ADDITIONAL

BRACING MEMBER ACCORDINGLY.

2 No. HURRICANE CLIPS AT EACH CONNECTION FULLY NAILED

WITH 32mm CLOUT NAILS.

PLAN VIEW

38x114 (GRADE5) GIRDER RAFTER BRACE

REQUIRED WHERE NO RAFTER BRACING IS

INSTALLED FOR GIRDER. FIX TO EACH TRUSS

WITH 3 NO. 76mm NAILS AND FIX TO GIRDER

WITH PRE-PUNCHED STRAP WRAPPED ROUND

AND FIXED WITH 3 CLOUT NAILS EACH END.

IF BRACE IS LONGER THAN 1800mm FIX 38x76

(GRADE5) T-BRACE.

VA

LL

EY

TR

US

SE

S

38 X 76 (GRADE5) RAFTER BRACING

FIXED TO TOP OP RAFTERS SEE

DETAILS BELOW

TRUSSESVALLEY TRUSSES

38 X 76 TIMBER BEARER

WALLPLATE

WALLPLATE

TRUSS

GIRDER TRUSS

EACH CONNECTION 3 No.

3.5mm DIA. X 75mm

WIRE NAILS

RAFTER

VALLEY TRUSS

38 X 76 BEARER

38 X 76 (GRADE5) BRACINGMEMBER FIXED TO TOP SIDE OF RAFTER AS CLOSE AS POSSIBLETO BEARER

VALLEY TRUSS

TRUSS RAFTER

2 NO HURRICANE CLIPS

FOR SHEETED ROOF

38 X76 (GRADE5) CONTINUOUS BEARER OR 200mm BLOCKSFIXED WITH 2 No. 76mm NAILS TO RAFTER. VALLEY TRUSSSKEW NAILED TO TRUSS AT EACH TRUSS CONNECTION

REV.: 213-05-2010

This

page

Inte

ntiona

lly

left

blank

DETAIL REF.: CRANK 1

GIRDER TOP CHORD RESTRAINT FOR VALLEY SIDE OF CRANKED ROOF

PAGE 28

NOTE:RUNNER FIXED TO UNDERSIDE OF RAFTERS WITH 2 No. X 75mm WIRE NAILS OR PUNCHED STRAP AND TO EXTEND OVER A MIN. OF 3 No. TRUSSES, AS SHOWN

RUNNER CENTRESLIGHT ROOF COVERING = 1200 MAX.HEAVY ROOF COVERING = 600 MAX.

PRE-PUNCHED STRAP TOBE FIXED TO RUNNERS & AROUND TOP CHORD OF GIRDER WITH 6 NO. CLOUT NAILS EACH END

SECTION A-A(TOP CHORD OF GIRDER SAME DEPTH AS TOP CHORD OF TRUSS)

SECTION A-A(TOP CHORD OF GIRDER DEEPER THAN TOP CHORD OF TRUSS)

38 X 76 (GRADE5) RUNNERS TO U/S OF TOP CHORD AT MAX. CENTERS AS NOTED BELOW

38 X 76 (GRADE5) RUNNERS

38 X 76 (GRADE5) RUNNERS ON U/S OF TOP CHORD

38 X 76 (GRADE5) RUNNERS ON U/S OF TOP CHORD

38 X 76 (GRADE5) RUNNERS

WHEN RAFTER OF GIRDER IS DEEPER THAN THAT OF

ADJACENT TRUSSES

REV.: 113-05-2010

THIS AREA MUST HAVE

A FULL BRACING SYSTEM

THIS AREA MUST HAVE

A FULL BRACING SYSTEM

THIS DETAIL MUST BE LINKED TOA FULLY BRACED AREA ON EACH SIDE OF THE VALLEY GIRDER

DETAIL REF.: CRANK 2

CONNECTION DETAIL FOR INCOMING TRUSSES

TO HIP & VALLEY GIRDER OF CRANKED ROOFS

PAGE 29

TRUSS CONNECTION AT LESS THAN 30 DEGREE INCOMING ONTO GIRDER

REV.: 113-05-2010

MAXIMUM TOTAL LOAD

NO: OFBOLTS

NO: OFPLIES

REACTIONIN (KN)

1

2

1

2

1

1

2

2

1.7

3.4

3.4

6.8

This

page

Inte

ntiona

lly

left

blank

PAGE 30

L AY O U T P L A N G E Y S E R

PERPENDICULAR TO TRUSSES

DETAIL REF.: GEYSER 2

GEYSER SUPPORT DECK FOR GEYSERS UP

TO 150 LITRES SUPPORTED ON TRUSSES

PAGE 31

ONE ADDITIONAL BOTTOM CHORDS OF THE SAME

SIZE AND GRADE NAILED ON WITH 75mm WIRE NAILS

AT 150mm STAGGERED CENTRES.

150mm OVERLAP PAST THE TRUSS NODE AT EACH END.

LAYOUT PLAN GEYSER

PARALLEL TO TRUSSES

ONE ADDITIONAL BOTTOM CHORD OF THE

SAME SIZE AND GRADE NAILED ON WITH 75mm

WIRE NAILS AT 150mm STAGGERED CENTRES.

150mm OVERLAP PAST THE TRUSS NODE AT

EACH END.

ONE ADDITIONAL

BOTTOM CHORD

P E R T R U S S

ONE ADDITIONAL BOTTOM

C H O R D P E R T R U S S

L

L

REV.: 113-05-2010

DETAIL REF.: SLIDING SHOE

SLIDING SHOE DETAILS FOR SCISSOR TRUSSES WITH EXCESSIVE

HORIZONTAL DISPLACEMENT (MITEK SA, ITS AND ALPINE DETAILS)

PAGE 32

38 X 114 (GRADE5) X 250 LONG TIMBER BLOCK BUTTING AGAINST TRUSS AND NAILED TO WALLPLATE WITH A MINIMUM OF 6 X 75mm WIRE NAILS

ALPINE GLIDE SHOE

MITEK SLIDING SHOE TRI-FIX GLIDE SHOE

STRAP TO BE TWISTED AND LOCATED APPROX. VERTICALLY AS SHOWN TO A C C O M M O D AT E OUTWARD MOVEMENT.

HOLDING DOWN STRAP FIXED IN ACCORDANCE WITH STANDARD H O L D I N G D O W N D E TA I L S

SMOOTH STAINLESS S T E E L M E T A L C O M P O N E N T NAILED TO TRUSS WITH 32mm CLOUT NAILS.

COMPONENT WITH TEFLON SLIDING PAD TO BE HAMMERED INTO WALLPLATE.

NOTES:DO NOT BUILD TRUSS INTO BRICKWORK AT SLIDING END. WHERE BRICK BEAMFILL IS INSTALLED PROVIDE M I N I M U M 1 0 m m CLEARANCE ALL ROUND. IT IS RECOMMENDED TO U S E T E M P O R A R Y REMOVABLE PACKING MATERIAL TO ENSURE U N O B S T R U C T E D CLEARANCE.

SLIDING SHOE OCCURS AT ONE END OF THE TRUSS ONLY. OTHER END TO BE NORMALLY FIXED. (HOOP IRON OR OTHER SPECIFIED.)

USE MASONITE OR SIMILAR FULL BEARING PACKS IF NECESSARY FOR TRUSS ALIGNMENT (DO NOT USE WEDGE)

SECTION X – X

TRUSS

SMOOTHCOMPONENT

PADDEDCOMPONENT

WALL PLATE

WALL PLATE

P.T.F.E.(TEFLON)

95X65TRI-NAIL"BASE"

31x127TRI-NAIL "RUNNER"

S T A N D A R D H O L D I N G DOWN DETAIL R E Q U I R E D

VIEW A–A

VIEW A–A

38x114 (GRADE5) x 250 L.g. TIMBER BLOCK BUTTING AGAINST TRUSS AND NAILED TO WALL – PLATE WITH A MIN. OF 6 No. 3.5mm x 75mm NAILS

REV 30/09/98

WALL PLATE

P. T. F. E.(TEFLON)

31 x 127mmALPINE “RUNNER”

WALL PLATE

S T A N D A R DH O L D I N GDOWN DETAILR E Q U I R E D

95 x 65ALPINE“BASE”

REV.: 113-05-2010

A – A

A – A

NAIL GABLE LADDER TO GABLE TRUSS RAFTER

NAIL GABLE LADDER TO GABLE TRUSS RAFTER

DETAIL REF.: GABLE

GABLE LADDER DETAILS FOR UP TO 600mm OVERHANG

PAGE 33

NOTE:ALL TIMBER TO BE 38 x 114 (GRADE5)

2 No. 100mm WIRE NAILS

2 No. HURRICANE CLIPS

FULLY NAILED

ISOMETRIC VIEW

SECTION

ELEVATION

PLAN

REV.: 125-05-2010

DETAIL REF.: P-BACK 1

PIGGY BACK DETAILS WITH TOP CHORD BEARER SUPPORT

PIGGY BACK DETAILS WITH LAPPED CHORD CONNECTION

PAGE 34

TYPICAL 50x76 BEARERS POSITIONED IMMEDIATELY ABOVE OR CLOSE AS POSSIBLE TO THE TRUSS VERTICALS (*).2 No. 100mm WIRE NAILS P E R C O N N E C T I O N .

(GRADE5)

PUNCHED STRAP WRAPPED AROUND TRUSS AND PIGGY BACK AT EVERY BEARER FULLY NAILED WITH 32mm CLOUT NAILS.

TIMBER BEARERS NAILED TO TRUSS WITH 2 No. 100mm WIRE NAILS.

T Y P I C A L 3 8 x 7 6 ( G R A D E 5 ) HORIZONTAL BRACING. 3 No. 75mm NAILS PER CONNECTION.BRACING AT APPROX 45 DEGREES.

RUNNERS AS PER TRUNCATED TRUSS TOP CHORD RESTRAINT REQUIREMENT

T Y P I C A L 3 8 x 7 6 (GRADE5) RUNNERS POSITIONED AS PER TRUNCATED TRUSS T O P C H O R D R E S T R A I N T REQUIREMENT 2 No. 75mm WIRE NAILS PER CONNECTION.

PUNCHED STRAP WRAPPED AROUND TRUSS AND PIGGY BACK AT EVERY BEARER FULLY NAILED WITH 32mm CLOUT NAILS. CHORDS TO BE LAPPED & NAILED WITH 75mm WIRE NAILS @ 150mm C/C STAGGERED ALONG THE CHORDS.

NOTE:

ALTERNATIVE CONNECTION:

PIGGY BACK TRUSS TO BE

LAPPED, BOLTED WITH M12

BOLTS @ THE NODES AND

NAILED WITH 75mm WIRE NAILS

@ 150mm c/c STAGGERED

ALONG THE CHORDS

38 x 76 (GRADE5)

RUNNERS

38 x 76 (GRADE5) RUNNER

38 x 76 (GRADE5)

TYPICAL 38x76 (GRADE5) TIMBER RUNNERS NAILEDTO TRUSS WITH75mm EWIRE NAILS.

TYPICAL 38 X 76 HORIZONTAL BRACING. 3 No. 75mmNAILS PER CONNECTION.BRACING AT APPROX 45 DEGREES.

(GRADE5)

TYPICAL 38 x 76 (GRADE5)RUNNERS

PIGGY BACK RUNNERS TO BE SPACED AT TRUSS C/C

TRUSS C/C

REV.: 113-05-2010

SPACED AT TRUSS

SPACING

PIGGY BACK TRUSS

SPACED AT TRUSSSPACING

DETAIL REF.: P-BACK 2

VARIOUS PIGGY BACK TRUSS CONNECTION DETAILS

PAGE 35

CONNECTION OF PIGGY-BACK TO TRUSS TO TRUNCATED TRUSS WITH LAPPED CHORDS NAILED AND BOLTED AT NODE POINTS

CONNECTION OF PIGGY-BACK TRUSS TO TRUNCATED TRUSS WITH PRE-PUNCHED STRAP

PIGGY-BACK CONNECTION DETAIL WITH TIMBER GUSSET – CHORDS DIRECTLY OVER EACH OTHER

75mm WIRE NAILS AT 150mm STAGGERED CENTRES ON LAPPEDCHORDS

TOP CHORD TO BE BRACED E I T H E R W I T H D I A G O N A L BRACING OR BRACING FRAMES

CARE MUST BE T A K E N W H E N S E T T I N G O U T BATTENS (NO NAILS INTO END GRAIN)

ALTERNATIVE:BLOCK OVERWITH 38x76 (GRADE 5)

38x76 (GRADE5) CONTINUOUS BEARER / RUNNER AT EACH JOINT AND BRACED AT EACH BRACED BAY.

SPAN OF PIGGY-BACK TRUSS

SPAN OF PIGGY-BACK TRUSSDIAGONAL BRACING

BETWEEN

38 x 114 (GRADE5) X 300Lg. GUSSET WITH 4 No. 3.5mm DIA. x 75mm Lg. WIRE NAILS EACH SIDE AT EACH UPPER PANEL POINT

38x76 (GRADE5) CONTINUOUS BEARER / RUNNER AT EACH JOINT AND BRACED AT EACH BRACED BAY.

3 8 x 11 4 ( G R A D E 5 ) X300Lg. GUSSET WITH 4 No. 3.5mm DIA. x 75mm Lg. WIRE NAILS EACH SIDE AT EACH UPPER PANEL POINT

CARE MUST BE T A K E N W H E N S E T T I N G O U T BATTENS (NO NAILS INTO END GRAIN)

ALTERNATIVE:BLOCK OVERWITH 38x76 (GRADE5)

PIGGY-BACK CONNECTION DETAIL WITH TIMBERGUSSET – RUNNER BETWEEN CHORDS

REV.: 013-05-2010

DETAIL REF.: ATTIC 1

ATTIC HEEL DETAIL & BRACING

PAGE 36

PLAN ON ROOF

TYPICAL:INTERSECTION OF PUNCHED STRAP WITH TOP CHORD & TIMBER PACK USE A MIN OF 2 No 3.5mm x 75mm WIRE NAIL PER CONNECTION.

TYPICAL:

38 x 114 (GRADE5) x

200 LONG TIMBER

PACK NAILED TO

TOP CHORD WITH A

MIN OF 3 No 3.5mm

x 75mm WIRE NAILS.

38x152 (GRADE5) SHELFF I X E D B E T W E E N TRUSSES WITH 2 No. H U R R I C A N ECLIPS ON EACH SIDE OFM E M B E R .

38x114 (GRADE5) x 200 L.gL TIMBER BLOCK B U T T I N G A G A I N S T TRUSS AND NAILED TO WALL – PLATE WITH A MIN. OF 6 No. 3.5mm x 75mm NAILS

TYPICAL:38x114 (GRADE5) x 200 L.g. TIMBER BLOCK BUTTING AGAINST TRUSS AND NAILED TO WALL – PLATE WITH A MIN. OF 6 No. 3.5mm X 75mm NAILS

38x152 (GRADE5) SHELF F I X E D B E T W E E N TRUSSES WITH 2 No. HURRICANE CLIPS ON EACH SIDE OF MEMBER.

REV.: 113-05-2010

NOTE A:STRAP TO BE NAILED TO TRUSS AS SHOWN AT TOP AND BOTTOM OF STRAP.

SEE NOTE A:


ATTIC PIGGYBACK BOLTED CONNECTION (2 & 3 PLY TRUSSES)

PAGE 37

NOTE:• NAIL AND BOLT TWO SCABS (ONE EACH FACE)

TO TWO OR THREE PLY ATTIC TRUSS.• SCABS TO MATCH TOP CHORD.• BOLTS TO BE M12.• WASHERS TO BE 36x4mm• NAILS TO BE 100mm WIRE NAILS.• NAILING TO BE ALONG BOTH FACES.

T I M B E R B E A R E R S NAILED TO TRUSS WITH 2 No. 75mm WIRE NAILS.

TYPICAL:38x76 (GRADE5) HORIZONTAL BRACING. MIN 3 No. 75mm NAILS PER CONNECTION.

PUNCHED STRAP WRAPPED AROUND TRUSS AND PIGGYBACK AT EVERY BEARER FULLY NAILED WITH 32mm CLOUT NAILS.

TYPICAL BEARERS POSITIONED IMMEDIATELY ABOVE OR CLOSE ASPOSSIBLE TO THE TRUSS VERTICALS 2 No. 75mm WIRE NAILS PER CONNECTION

REV.: 113-05-2010


SPACED AT

TRUSS SPACING

TYPICALBEARERS

38x76

TIMBERSCABS

TYPICALPIGGY-BACKTRUSS


ATTIC PIGGYBACK NAILED CONNECTION (2 & 3 PLY TRUSSES)

PAGE 38

NOTE:• NAIL TWO SCABS (ONE EACH FACE) TO

TWO OR THREE PLY ATTIC TRUSS.• SCAB TO MATCH TOP CHORD.• NAILS TO BE 100mm WIRE NAILS.• NAILING TO BE ALONG BOTH FACES.

TYPICAL BEARERS POSIT IONED IMMEDIATELY ABOVE OR CLOSE AS POSSIBLE TO THE TRUSS VERTICALS 2 No. 75mm WIRE NAILS PER CONNECTION

TIMBER BEARERS NAILED TO TRUSS WITH 2 No 75mm WIRE NAILS.

TRI-STRAP WRAPPED AROUND

TRUSS AND TOP HAT AT EVERY

BEARER FULLY NAILED WITH

32mm CLOUT NAILS.

TYPICAL 38x76 (GRADE5) HORIZONTAL BRACING. MIN 3 No. 75mm NAILS PER CONNECTION.

REV.: 113-05-2010


SPACED AT

TRUSS SPACING

TYPICALBEARERS

38x76

TIMBERSCABS

TYPICALTOP HAT (PIGGY-BACK)TRUSS

DETAIL REF.: DORMER 1

OLD ENGLISH DORMER – GABLE & HIP

FRENCH DORMER

PAGE 39REV.: 0

01-07-2001

DETAIL REF.: DORMER 2

EYEBROW DORMER

MODERN ENGLISH DORMER

PAGE 40REV.: 0

01-07-2001

Part Two Bracing Details

PAGE 41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

CONTENTSPAGE # DETAIL REF. DESCRIPTION

TCBRACE1

TCBRACE2

TCBRACE3

TCBRACE4

TCBRACE5

TCBRACE6

TCBRACE7

TCBRACE8

TCBRACE9

TCBRACE10

FRAME1

FRAME2

FRAME3

FRAME4

RUNNER1

RUNNER2

RUNNER3

BCBRACE1

WEB1

WEB2

MBRACE1

MBRACE2

MBRACE3

MBRACE4

MBRACE5

MBRACE6

MBRACE7

MRUNNER1

MRUNNER2

MRUNNER3

MRUNNER4

MRUNNER5

MRUNNER6

MBRACE8

MBRACE9

MBRACE10

MBRACE11

MBRACE12

T. C. bracing-tiles-<6.6m span

Stub /cantilever heels-tiles-<6.6m

T. C. stability bracing-tiles->6.6m

T. C. stability bracing-tiles->9. 0m

Stub /cantilever heels-tiles->6.6m

Dutch hip top chord bracing

T. C. stiffener-tiles->9. 0m

T. C. stiffener-tiles->9. 0m

Top chord bracing-sheeting-15.0m span

Stub & cantilever heels-sheeting

Bracing/stiffener frame connections

Bracing/stiffener frame splices

Bracing/stiffener frame standard heel details

Bracing/stiffener frame stub heel details

General runner requirements

Runner girder connection & splices

Runner girder connection

Bottom chord runners & bracing

Web runners & bracing

Web "T'-bracing

Top chord metal brace - general

Top chord metal brace batten/purlin

Top chord metal brace heels

Top chord metal brace heels

Top chord metal brace dutch hip

Bottom chord metal brace details

Web metal brace details

Bottom chord metal runner details

Web metal runner details

Bottom chord metal runner & brace

Web metal runner & metal brace

Metal runner special detail

Metal runner special detail

Top chord metal brace battens

Top chord metal brace purlins

Top chord metal brace dutch hip

Bottom chord metal brace details

Web metal brace details

DETAIL REF.: TCBRACE 1

ISOMETRIC VIEW

APEX DETAIL

HEEL DETAIL

ISOMETRIC VIEW

BLOCK SPLICE DETAIL AND

HEEL DETAILSIDE VIEW

HEEL DETAIL

PLAN VIEW

STABILITY BRACING & TOP CHORD STIFFENER – TILED ROOFS TRUSS SPANS UP TO 6.6m - MAXIMUM SPACING - 14.3m

PAGE 42

N.B.: SPLICE (WHEN NECESSARY) TO OCCUR IN UPPER HALF OF BRACE (i.e. CLOSER TO APEX)

FIX TOP CHORD BRACE TO WALL PLATE WITH THREE 100mm WIRE NAILS

RULES:FOR TRUSSES UP TO 6.6m SPAN– BATTENED ROOFS REQUIRED EVERY 14.3m OR LESS ON TRUSS RUNS WITH THE SAME SPAN.(16½ - ¹/3SPAN) = 14.3m

38x76 (GRADE 5)DIAGONAL TOP CHORD BRACING

BLOCK SPLICEIF REQUIRED

DIAGONAL BRACE TO TRUSS CONNECTION

200mm BLOCK SIX WIRE NAILS 2 No. 75mm

WIRE NAILS

38x76 (GRADE 5) DIAGONAL TOP CHORD BRACING

TIMBER BLOCK SIX 75mm NAILS

WALL PLATEFIX TOP CHORD BRACE TO WALL PLATE WITH THREE 100mm NAILS

REV.: 226-05-2010

BRACE TO TRUSS CONNECTION


CANTILEVER WALL DETAILS OF STABILITY BRACING – TILED ROOFS FORTRUSS ENDS NOT BUILT INTO BRICKWORK – TRUSS SPANS 6.6m & LESS

STUB WALL DETAIL OF STABILITY BRACING – TILED ROOFS FOR TRUSS

ENDS NOT BUILT INTO BRICKWORK – TRUSS SPANS 6.6m & LESS

PAGE 43

NOTE:USE THIS DETAIL FOR STABILITY BRACING TOP CHORD STIFFENER FOR TRUSS SPANS OF 6.6m AND LESS

38X76 (GRADE5) D I A G O N A L T O P CHORD BRACING

38X114 (GRADE5) DIAGONAL BRACING (From top chord to wall plate)

200mm BLOCKSIX WIRE NAILS

TWO HURRICANE CLIPSAT E A C H E N D O FD I A G O N A L B R A C E


38 X 114 (GRADE5) DIAGONAL BRACING (From top chord to wall plate)

TWO HURRICANE CLIPS AT EACH END OF DIAGONAL BRACE

FOR CANTILEVERS OVER 1.8mCONTINUE T.C. BRACE TO HEEL



TWO HURRICANE CLIPSAT E A C H E N D O FD I A G O N A L B R A C E

38X76 (GRADE5) DIAGONALTOP CHORD BRACING



NOTE:USE THIS DETAIL FOR STABILITY BRACING TOP CHORD STIFFENER FOR TRUSS SPANS OF 6.6m AND LESS

REV.: 126-03-2003


STABILITY BRACING AND TOP CHORD STIFFENER – TILED ROOFS – TRUSS SPANS OVER 6.6m UP TO 9.0m MAXIMUM SPACING = (16.5m – (TRUSS SPAN(m) X 0.3) )

PAGE 44

APEX DETAIL

BLOCK SPLICE AND BRACE TO TRUSS CONNECTION

STANDARD-HEEL SHELF BRACING FOR TILED ROOFSSPANS OVER 6.6m UP TO 9.0m

STANDARD-HEEL BRACING CONNECTION WHERE BEAMFILL IS NOT USED. (SPANS OVER 6.6m UP TO 9.0m)

38x114 (GRADE5) RAFTER BRACING MEMBER FIXED TO U/S RAFTER AS CLOSE AS POSSIBLE TO APEX

TRUSS RAFTERWEBS

3 NO. 75mmWIRE NAILS


200 LONG TIMBER BLOCK (TO SUIT WALLPLATE SIZE) TO BUTT AGAINST TRUSS AND NAILED TO WALL PLATE WITH A MIN OF 6 No. 75mm NAILS

38x114 (GRADE5) RAFTER BRACING BOLTED TO U/S OF SHELF WITH 2 No. M12 BOLTS & 36x4 WASHERS BOTH SIDES

38x114 (GRADE5) BRACING MEMBER BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS

38x152 (GRADE5) OR 38x228 (GRADE5) VERTICAL SHELVES FITTED TIGHTLY BETWEEN TWO TRUSSES ON EITHER SIDE OF BRACING SHELF AND NAILED TO WALLPLATE WITH 5 NO. 75mm NAILS

N.B. – IF NO BEAMFILL OCCURS THEN REFER TO DETAIL BELOW

RAFTER BRACING FOR TILED ROOFSSPANS OVER 6.6 UP TO 9.0m

3 8 x 1 1 4 ( G R A D E 5 ) CONTINUOUS BRACING MEMBER WITH BLOCK SPLICE IF NECESSARY, NAILED TO UNDERSIDE OF RAFTERS AT APPROX. 45° SO THAT IT DOES NOT CONFLICT WITH THE WEBS OF THE TRUSSES

APEX DETAIL

BRACING SHELF

SPLICE

BLOCK

38x114 (GRADE5) BLOCK SPLICE

NAILED TO BRACING MEMBER

REV.: 113-05-2010

38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 No. HURRICANE CLIPS ON EACH END OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER. FULLY NAILED WITH 32mm CLOUT NAILS

38X228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.


STABILITY BRACING ONLY OF TOP CHORD – TILED ROOFS ALL TRUSS SPANS OVER 9.0m MAXIMUM SPACING = (16.5m – (TRUSS SPAN(m) X 0.3) )

PAGE 45

APEX DETAIL

STANDARD-HEEL SHELF BRACING FOR TILED ROOFSSPANS OVER 9.0m

STANDARD-HEEL BRACING CONNECTION WHERE BEAMFILL IS NOT USED. (SPANS OVER 9.0m)

38x114 (GRADE5) RAFTER BRACING MEMBER FIXED TO U/S RAFTER AS CLOSE AS POSSIBLE TO APEX

TRUSS RAFTERWEBS

3 NO. 75mmWIRE NAILS

38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 No. HURRICANE CLIPS ON EACH END OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER. FULLY NAILED WITH 32mm CLOUT NAILS

200 LONG TIMBER BLOCK (TO SUIT WALLPLATE SIZE) TO BUTT AGAINST TRUSS AND NAILED TO WALL PLATE WITH A MIN OF 6 No. 75mm NAILS

38x114 (GRADE5) RAFTER BRACING BOLTED TO U/S OF SHELF WITH 2 No. M12 BOLTS & 36x4 WASHERS BOTH SIDES

38x114 (GRADE5) BRACING MEMBER BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS 38X228 (GRADE5) SHELF FIXED

BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.

38x152 (GRADE5) OR 38x228 (GRADE5) VERTICAL SHELVES FITTED TIGHTLY BETWEEN TWO TRUSSES ON EITHER SIDE OF BRACING SHELF AND NAILED TO WALLPLATE WITH 5 NO. 75mm NAILS


RAFTER BRACING FOR TILED ROOFSSPANS OVER 9.0m

3 8 x 1 1 4 ( G R A D E 5 ) CONTINUOUS BRACING MEMBER WITH BLOCK SPLICE IF NECESSARY, NAILED TO UNDERSIDE OF RAFTERS AT APPROX. 45° SO THAT IT DOES NOT CONFLICT WITH THE WEBS OF THE TRUSSES

APEX DETAIL

BRACING SHELF

SPLICE

BLOCK

38x114 (GRADE5) BLOCK SPLICE

NAILED TO BRACING MEMBER

BLOCK SPLICE AND BRACE TO TRUSS CONNECTION


REV.: 113-05-2010


STUB OR CANTILEVER SHELF FOR STABILITY BRACING – TILED ROOFS

TRUSS ENDS BUILT INTO BRICKWORK – TRUSS SPANS OVER 6.6m

PAGE 46

BRICK BEAMFILL (NB: BOTH TOP AND BOTTOM CHORD NIBS MUST BE SECURELY BUILT INTO THE BRICKWORK)

38x114 (GRADE5) RAFTER B R A C I N G M E M B E R BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS & 36X4mm WASHERS BOTH SIDES

38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF SHELF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.

38X114 (GRADE5) BRACING MEMBERS TO EACH SIDE OF SHELF BAY (FROM RAFTER TO TIEBEAM) C/W ABUTMENT BLOCK – CONNECTION TO RAFTER AND TIEBEAM – USE 2 No. HURRICANE CLIPS FULLY NAILED AT EACH END WITH 32mm CLOUT NAILS.

200 LONG TIMBER BLOCK (TO SUIT WALL PLATE SIZE) TO B U T T A G A I N S T TRUSS AND NAILED TO WALL PLATE WITH 6 NO. 75mm NAILS


STUB OR CANTILEVER SHELF FOR STABILITY BRACING – TILED ROOFS

TRUSS ENDS NOT BUILT INTO BRICKWORK – TRUSS SPANS OVER 6.6m

38x114 (GRADE5) RAFTER BRACING MEMBER BOLTED TO U/S OF SHELF WITH 2 NO. M12 BOLTS & 36X4mm WASHERS BOTH SIDES

38x228 (GRADE5) SHELF FIXED BETWEEN TRUSSES WITH 2 NO. HURRICANE CLIPS ON EACH SIDE OF SHELF MEMBER AND 3X75MM NAILS EACH SIDE OF RAFTER.

REV.: 126-03-2002


TOP CHORD BRACING OF DUTCH HIP (LOUVRE HIP) END TILED ROOFS AND SHEETED ROOFS (OR USE TOP CHORD BRACING FOR SHEETED ROOFS IN SIMILAR FASHION TO BRACE THE LOUVRE PART)

PAGE 47

NOTE: FOR TILED ROOFS

FOR TRUSS SPANS OF 6.6m AND LESS THE HIP AND BRACING WILL ACT AS STABILITY AND ANTI-BUCKLE BRACING. THE HIP AND NEXT DIAGONAL TOP CHORD BRACING WILL BE A MAXIMUM OF 5.5m (CENTRE TO CENTRE) APART.

FOR TRUSS SPANS OF GREATER THAN 6.6m THE HIP AND BRACING WILL ACT AS STABILITY BRACING ONLY. THE HIP AND NEXT DIAGONAL TOP CHORD BRACING WILL BE A MAXIMUM OF 9.5m (CENTRE TO CENTRE) APART.

38 X 114 (GRADE5) RAFTER BRACING MEMBER FIXED TO U/S RAFTER AS CLOSE AS POSSIBLE TO APEX

3 N0. 3. 5mm DIA. X 75mm WIRE NAILS PER CONNECTION

TRUSS RAFTER WEBS

3 NO. 3.5mm DIA. X 75mm

WIRE NAILS

38X114 (GRADE5) RAFTER BRACINGTO EXTEND PAST GIRDER AND FIRST JACK

DUTCH GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS LESS THAN 1/4 SPAN STANDARD GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS GREATER THAN 1/4 SPAN

REV.: 001-07-2001

This

page

Inte

ntiona

lly

left

blank

TOP CHORD BRACING FOR SHEETED ROOFS TRUSS SPANS LESS THAN 15m

DETAIL REF.: TCBRACE 9PAGE 50

PURLINS

TRUSSES

WALL PLATE

BRACING MUST BE FIXED ABOVE WALL PLATE

EACH CONN. 3 No. 75mm NAILS

BRACING MEMBERS TO BE 38x76 (GRADE5) NAILED TO TOP SIDE OF TOP CHORD

PLAN VIEW

APEXDETAIL

TOP CHORDSTANDARDDETAIL – SEE PAGE 51 APEX CONNECTION

DETAIL

RAFTER

38X76 (GRADE5) BRACING MEMBER

3 No. 75mm WIRE NAILS

PURLIN

HURRICANE CLIP

APEX PURLINS 50X76 ON EDGE

PURLINS 50X76 ON EDGE

EAVE PURLIN 50X76 ON EDGE

APEX PURLIN DETAIL

WALLPLATE

CANTILEVER HEEL DETAIL (DIAGONAL BRACES NOT SHOWN FOR CLARITY)TOP CHORD BRACING

38X76 (GRADE5) THREE 75mm WIRE NAILS PER CONNECTION

ISOMETRIC VIEW

NO HEEL DETAIL REQUIRED IF BEAM FILLING IS DONE USE DETAIL TCBRACE10 - PG51 (SHALLOW STUB DETAIL) IF NO BEAM FILLING IS DONE

EAVE PURLIN 50X76 ON EDGE

REV.: 127-05-2010

AT 45 DEGREES

TOP CHORD BRACING FOR SHEETED ROOFS – STUB AND CANTILEVER HEELS – TRUSS SPANS LESS THAN 15m

DETAIL REF.: TCBRACE 10PAGE 51

TIMBER BLOCK RAFTER

PURLIN

EACH CONNECTION 3 No. 75mm WIRE NAILS

38X76 (GRADE5) BRACING MEMBER FIXED TO TOP SIDE OF RAFTER AS CLOSE AS POSSIBLE TO PURLIN AT APPROX. 45°

TIMBER BLOCK

DIAGONAL RAFTER BRACE MUST BE FIXED ABOVE WALLPLATE AS SHOWN

BRACE TO RAFTER C O N N E C T I O N

BRACE TO RAFTER CONNECTION DETAIL

TIMBER BLOCK 200 L O N G ( T O S U I T W A L L P L AT E S I Z E ) NAILED TO WALLPLATE USING 6 No. 75mm NAILS

2 No. 38X76 (GRADE5) BRACING MEMBERS TO FIT TIGHTLY BETWEEN 3 TRUSSES AND FIXED TO RAFTER AND TIEBEAM OF TRUSSES. EACH CONNECTION USE 2 No. HURRICANE CLIPS FULLY NAILED WITH 32mm CLOUT NAILS. (WHERE BEAM INFILL OCCURS AND IS OF A STRUCTURALLY ACCEPTABLE CONSTRUCTION THESE 2 No. BRACING MEMBERS MAY BE OMITTED.)

TYPICAL PURLINC O N N E C T I O N

BRACE TO RAFTER CONNECTION

POINT OF INCOMING RAFTER BRACE

PURLIN

RAFTER

38X114 (GRADE5) BRACING MEMBER

2 NO. HURRICANE CLIPS AT EACH CONN. OF BRACING TO TRUSS, FULLY NAILED WITH 40mm CLOUT NAILS

WALLPLATE

BLOCK 200 LONG (TO SUIT WALL PLATE SIZE) FIXED TO WALLPLATE WITH 6 No. 75mm NAILS. (OMIT IF T R U S S N I B I S S U I TA B LY B U I LT I N T O WA L L )

NOTE: VERTICAL BRACINGS IS NOT REQUIRED IF BRICKWORK BEAMFILL IS BUILT TO THE TOP OF THE TRUSS

HURRICANE CLIP

REV.: 127-05-2010

TOP & BOTTOM SINGLE BAY BRACING FRAME DETAILS

(FRAMES ARE USED ON THE TOP CHORDS ONLY AS STIFFENERS ON TILED ROOFS WITH TRUSS SPANS OVER 9.0m AT SPACINGS AS INDICATED ON THE ROOF PLAN)

DETAIL REF.: FRAME 1PAGE 52

CHORD

CHORDEND VERTICALS

TIM

BE

R B

LO

CK

TYP DETAIL ‘X’

TRUSS

TRUSS

TYP DETAIL ‘Y’

DETAIL ‘X’

SINGLE BAY FRAME DETAILS

BRACING FRAME 38X38 CONTINUOUS BEARER NAILED AT 300c/c WITH 3.5X75mm NAILS

ISOMETRIC VIEW SINGLE BAY / TOP CHORD FRAME ONLY

APEX CONNECTION SEE DETAIL PAGE 53

HEEL CONNECTION SEE DETAILS PAGES 54 AND 55

RAFTER LENGTH

BRACING FRAME TO TRUSS AND BATTEN CONNECTION

SEE R

OO

F PLA

N FO

R IN

TERVA

L

TOPCHORD

BOTTOMCHORD

BRACINGFRAMES

TRUSSES

BATTEN

DETAIL ‘Y’

REV.: 227-05-2010

TYPICAL BOTTOM CHORD BRACING FRAME SPLICE CONNECTIONAT CENTRE OF TRUSS BOTTOM CHORDS – SHEETED ROOFS ONLY

BRACING / STIFFENER FRAME CONNECTION DETAILS AT APEX


BOLT EDGE DISTANCE

PLAN VIEW OF APEX SPLICETYPICAL SECTION THROGH BRACING FRAMES

ISOMETRIC VIEW OF APEX SPLICE

1.TWO PIECES OF 38X152 (GRADE 5) TIMBER CONNECTED WITH TWO 150X150mm (MINIMUM PLATE SIZE) FACTORY PRESSED NAIL PLATES ON ONE SIDE ONLY

2.MEMBERS BENT TO SUIT TRUSS PITCH

3.CONNECTOR PIECES BOLTED TO THE UNDERSIDE OF THE BRACING FRAMES WITH M12 BOLTS WITH 36X4mm WASHERS EACH SIDE. THREE BOLTS PER FRAME. BOLTS MUST BE POSITIONED TO CLEAR APEX BATTEN. MIN. EDGE DISTANCE OF 25mm.

38X38 BATTEN SUPPORT BATTEN CUT SHORT OF APEX

38X152 (GRADE5) 38X228 (GRADE5) OR SPLICE CONNECTOR AS ABOVE

FRAMES MUST BUTT AGAINST EACH OTHER

CEILING 38X38 BATTEN

B.C. CHORD

TYPICAL SECTION THROUGH BRACING FRAMESPLAN VIEW ON SPLICE

REV.: 231-05-2010

SINGLE BAY PREFABRICATED BRACING / STIFFENER FRAME STANDARD HEEL SUPPORT


WALLPLATE

PREFABRICATED BRACING FRAME TO BE FIXED TO RAFTER AND TIE BEAM ON 38X38 MEMBERS MEMBERS WITH 75mm WIRE NAILS AT 300mm c/c

38X38 BATTEN TO BE NAILED AT 300 c/c TO RAFTER AND TIE BEAM TO SUPPORT PRE-FABRICATED FRAME

TIMBER BLOCK 38X114 (GRADE5) X 200mm TO BE NAILED TO WALL PLATE WITH 6 X 75mm WIRE NAILS

38X114/152/228 (GRADE5) TIMBER MEMBER(TO SUIT TOP CHORD SIZE) TIGHTLY FITTED BETWEEN TRUSSES AND FIXED WITH TWO FULLY NAILED HURRICANE CLIPS EACH END

NOTE:PROCEDURE OF FIXING TOP CHORD BRACING FRAME TO BE APPLIED WHEN FIXING BOTTOM CHORD BRACING FRAME.

REV.: 231-05-2010


PREFABRICATED BRACING FRAME TO BE FIXED TO RAFTER AND TIE BEAM ON 38X38 BEARERS WITH 75mm WIRE NAILS AT 300mm c/c

PRE-FRABICATED FRAME TO BE FIXED BETWEEN STUB-END TRUSSES WITH HURRICANE CLIPS.

38 X 114 (GRADE5) BRACING MEMBER (NOT REQUIRED WITH BEAM FILLING) TO EITHER SIDE OF SHELF BAY TO BE FIXED WITH 4 X HURRICANE CLIPS

38 X 38 BATTEN TO BE NAILED AT 300 c/c TO RAFTER AND TIE BEAM TO SUPPORT PRE-FABRICATED BRACING FRAME

TIMBER BLOCK 38 X 114(GRADE5) X 200mm TO BE NAILED TO WALL PLATE WITH 6 X 75mm WIRE NAILS

1.TWO PIECES OF 38X152 (GRADE 5) TIMBER CONNECTED WITH TWO 150X150mm (MINIMUM PLATE SIZE) FACTORY PRESSED NAIL PLATES ON ONE SIDE ONLY

2.MEMBERS BENT TO SUIT TRUSS PITCH

3.CONNECTOR PIECES BOLTED TO THE UNDERSIDE OF BRACING FRAMES WITH M12 BOLTS WITH 4X36mm WASHERS EACH SIDE. THREE BOLTS PER FRAME. BOLTS MUST AVOID APEX BATTEN. MIN. EDGE DISTANCE OF 25mm.

REV.: 231-05-2010

GENERAL RULES FOR BOTTOM CHORD RUNNER/BINDER

AND WEB RUNNER/BINDER REQUIREMENTS

DETAIL REF.: RUNNER 1PAGE 56

CONTINUOUS WEB RUNNERS AS PER TRUSS DESIGN REQUIREMENTS (SEE NOTE 4 BELOW) WEB DIAGONAL BRACING

AT BRACED BAY ONLY

CONTINUOUS BOTTOM CHORD RUNNERS (SEE NOTES BELOW)

BOTTOM CHORD BRACING AT BRACED BAY ONLY

RUNNERS/BINDERS ARE ESSENTIAL IN THE FOLLOWING CASES.

RUNNERS ARE ALSO REFERRED TO AS BINDERS.

1) ON BOTTOM CHORDS OF CANTILEVER TRUSSES OVER CANTILEVER SECTION AND ADJACENT BAY. HERE THE BOTTOM CHORD IS IN COMPRESSION THEREFORE RUNNERS MUST BE AT 1800mm MAX. CENTRES.

2) ON BOTTOM CHORDS OF TRUSSES WITH LIGHT-WEIGHT ROOF COVERING BEFORE PERMANENT CEILINGS ARE INSTALLED DIRECTLY TO UNDERSIDE OF TIE BEAM. THE BOTTOM CHORD IS IN TENSION THEREFORE RUNNERS MUST BE AT 2600mm MAX. CENTRES.

3) ON BOTTOM CHORDS OF ROOFS WITH SUSPENDED CEILINGS OR WITHOUT CEILINGS.THE BOTTOM CHORDS IS IN TENSION THEREFORE RUNNERS MUST BE AT 2600mm MAX. CENTRES.

4) ON TENSION WEBS LONGER THAN 2600mm AND COMPRESSION WEBS LONGER THAN 1800mm U.O.S.

UNLESS OTHERWISE SHOWN:-

1) MAXIMUM SPACING OF RUNNERS FOR 38 MM TIE-BEAM = 2600 mm

2) MAXIMUM SPACING OF RUNNERS FOR 50 MM TIE-BEAM = 3450 mm

REV.: 131-05-2010

CONNECTION OF B.C. RUNNER / BINDER TO GIRDER B.C.

RUNNER / BINDER SPLICING DETAILS


38x76 B.C. RUNNER

2 NO. 75mm WIRENAILS

STANDARD TRUSSGIRDER TRUSS

4 NO. 100mm WIRE NAILS

38x76x300 LONG TIMBER BLOCK

MIN. 35mm OVERLAP

MIN. 35mm OVERLAP

TRUSS TIE BEAM OR WEB

600

2 No. 75mm WIRE NAILS (PER RUNNER) AT EVERY CONNECTION

38x76 (GRADE5) RUNNERS


38x76 (GRADE5) 600mm LONG BLOCK SIX 75mm WIRE NAILS EACH SIDE OF JOINT

REV.: 131-05-2010

RUNNER / BINDER JOINING DETAIL FORVARYING BOTTOM CHORD DEPTHS


A

A TRUSS BOTTOM CHORD

TRUSS TOP CHORD

TRUSS BOTTOM CHORD

SECTION A-A

PACK

TR

S A

TR

S A

TR

S A

TR

S B

TR

S B

4 x 75mm WIRE NAILS TO BE NAILED TO TOP AND BOTTOM

TRUSS TYPE “B” LONGITUDINAL RUNNER OR BRACE

36mm OR 2 No. 36mm PACK TO SUIT DIFFERENCE IN BOTTOM CHORD DEPTHS

TRUSS TYPE “A”LONGITUDINAL RUNNER OR BRACE

CHORD‘A’

114

114

152

152

228

228

NONE

50x76

50x38

ONE

TRUSS

SPACE

CHORD‘B

PACKSIZE

LENGTHmm

REV.: 231-05-2010

BOTTOM CHORD RUNNER / BINDER AND BRACING DETAILS TILED ROOFS = ALL SPANS; SHEETED ROOFS = MAX 15m SPAN. (RUNNER DETAILS REMAIN WHEN BRACING FRAMES ARE SPECIFIED)

DETAIL REF.: BCBRACE 1PAGE 59

RUNNER SPLICE REFER TO DETAIL BELOW AND DETAILS ON PAGE 57

GENERAL NOTES:TIEBEAM BRACING AND RUNNERS ARE REQUIRED FOR LIGHT WEIGHT ROOFS, TRUSSES WITH SUSPENDED O R N O C E I L I N G S A N D A S TEMPORARY BRACING UNTIL SUCH TIME THAT CEILINGS ARE INSTALLED (IF REQUIRED BY THE ENGINEER)

DETAIL BELOW

MAX. 2600 cc

BR

AC

ED

BAY

TIEBEAM BRACING AND RUNNERS

BOTTOM CHORD RUNNERS MUST BE PLACED AT BOTTOM CHORD NODE POINTS. SHOULD THE DESIGNER REQUIRE INTERMEDIATE RUNNERS THESE WILL BE SHOWN AS ADDITIONAL MEMBERS ON THE DRAWINGS

38 x 76 (GRADE5) BRACING MEMBERS TO BE NAILED TO TOP SIDE OF TIEBEAM OVER THREE OR FOUR TRUSSES AT APPROX. 45 DEGREES. 2 No. 75mm NAILS PER CONNECTION

38 x 76 (GRADE5) CANTILEVER BRACING MEMBER WITH 38 x 76 (GRADE5) TIEBEAM RUNNER AS SPECIFIED BY THE DESIGNER

38 x 76 (GRADE5) TIEBEAM RUNNERS AT MAXIMUM 2600mm OR 1800mm FOR CANTILEVERS OR AT CENTRES AS SPECIFIED BY THE DESIGNER 2 No. 75mm WIRE NAILS PER CONNECTION

TRUSSES

WALLPLATE

18

00

TIEBEAM

DETAIL BELOW

26

00

TIE

BE

AM

PLAN VIEW – STANDARD HEEL PLAN VIEW – CANTILEVER HEEL

TIE RUNNER

TIEBEAM

TIEBEAM BRACING CONNECTION

38x76 (GRADE5) BRACING MEMBER FIXED TOP SIDE OF T I E B E A M A S C L O S E A S POSSIBLE TO TIEBEAM RUNNER

EACH CONNECTION 2No. 75mm WIRE NAILS

TIEBEAM RUNNER SPLICE

2 No. 75mm WIRE NAILS (PER RUNNER)

TIEBEAM


REV.: 131-05-2010

WEB RUNNER / BINDER AND BRACING DETAILS FOR WEBS NEEDINGRESTRAINTS WHERE THREE OR MORE WEBS LINE UP / ARE IN PLANE

DETAIL REF.: WEB 1PAGE 60

38x76 (GRADE5) WEB RUNNERS SEE TRUSS D E S I G N S F O R W E B RUNNER REQUIREMENTS

BR

AC

ED

BAY

38x76 (GRADE5) CROSS BRACING AT MEMBERS ACCESSIBLE FROM ONE SIDE ONLY

38x76 (GRADE5) CROSS BRACING TO BE FIXED TO THREE, FIVE O R S E V E N T R U S S E S AT APPROXIMATELY 45 DEGREES

RUNNER SPLICE

WEB AND RUNNER BRACING

PURLIN OR BATTEN

45°ORLESS

TIEBEAMS

RAFTERS

SINGLE WEB RUNNER

WEB RUNNER AND BRACEON THE SAME SIDE

RAFTERS

TIEBEAMS

2 NO. 3.5mm DIA. x 75mm W I R E N A I L S P E R CONNECTION

38x76 (GRADE5) DIAGONAL BRACING MEMBER NAILED TO WEBS AT EACH BRACED BAY, OR AS INDICATED B Y T H E D E S I G N E R

D I A G O N A L BRACES TO BE AT A P P R O X . 4 5 D E G R E E S . D I S T A N C E B E T W E E N R U N N E R S DIVIDED BY TRUSS SPACING, PLUS O N E E Q U A L S T R U S S E S T O CROSS

PURLIN OR BATTEN

38x76 (GRADE5)WEB RUNNERS

AB

+ 1 = No. X

THIS MEMBER

CAN ALSO BE MOVED

TO DOTTED

LINE POSITION

RAFTERS

TIEBEAMS

B

X X

A

WEB BRACING WHERE TWO RUNNERS OCCUR WEB RUNNER SPLICE

2 NO. 3.5mm DIA. x 75mm WIRE NAILS (PER RUNNER)

38x76 (GRADE5) WEB RUNNERS

WEB

REV.: 131-05-2010

WEB STIFFENER OR T-BRACING ON WEBS AS PER TRUSS DESIGN REQUIREMENTS – USED WHEN LESS THAN THREE WEBS NEEDING LATERAL RESTRAINT LINE UP / ARE IN PLANE

DETAIL REF.: WEB 2PAGE 61

WEB STIFFENERS

WEB STIFFENERS TO BE FULLY NAILED TO ALL PLIES OF MULTIPLE MEMBERS

X

X

3 8 x 7 6 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES

WEB

DETAIL T1X-X T2X-X DETAIL

WEBS

DETAIL T3X-X

WEBS

T4

WEBS

DETAILX-X

3 8 x 1 5 2 ( G R A D E 5 ) C O N T I N U O U S W E B STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES

FIRST NAIL AT 50mm F R O M E N D . MAXIMUM END AWAY FROM JOINT = 100mm

REMEDIAL DETAIL WHEN WEBS DO NOT LINE UP – (MAXIMUM 15mm OUT ALLOWED) USE T-BRACE BOTH SIDES

WEBS




3 8 x 1 5 2 ( G R A D E 5 ) CONTINUOUS WEB STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES

38x152 (GRADE5) CONTINUOUS WEB STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. x 75mm NAILS AT 300mm CENTRES

REV.: 131-05-2010

TOP CHORD BRACING WITH METAL ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS

DETAIL REF.: MBRACE 1PAGE 62

No. OF RETURN SECTIONS DETERMINED BY RAFTER LENGTH

BRACED BAY FOR HEEL FIXING DETAILS REFER DETAILS – PAGES 64 & 65

BATTENS (TYPICAL)

WALLPLATE

ANGLE LESS THAN 45° IN ROOF PLANE

TRUSSES (TYPICAL)

RETURN POINT CONNECTION TO BE WITHIN 200mm OF BATTENS. REFER – DETAIL PAGE 63

EACH CONNECTION TO TOP OF RAFTER NAILED AS PER M A N U F A C T U R E R S SPECIFICATION.

WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF SPEEDBRACE

RIDGE LINE

SP

AN

TOP CHORD METAL BRACING LAYOUT FOR TILED ROOFS UP TO 11.5m SPAN BRACING BAY SPACING AS PER DESIGNER – SEE ROOF PLAN

RIDGE LINE

SP

AN

No. OF RETURN SECTIONS DETERMINED BY RAFTER LENGTH

BRACED BAY FOR HEEL FIXING DETAILS REFER DETAILS – SBHA AND SBHB

RETURN POINT CONNECTION TO BE WITHIN 200mm OF PURLIN R E F E R – D E T A I L P G 6 3

WALLPLATE

PURLINS (TYPICAL)

TRUSSES (TYPICAL)

EACH CONNECTION TO TOP OF R A F T E R N A I L E D A S P E R MANUFACTURERS SPECIFICATION

ANGLE LESS THAN 45° IN ROOF PLANE

WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF SPEED BRACE

TOP CHORD METAL BRACING LAYOUT FOR SHEETED ROOFS UP TO 15m SPAN BRACING BAY SPACINGS AS PER DESIGNER – SEE ROOF PLAN

REV.: 131-05-2010

TOP CHORD BRACING WITH METAL ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS


75mm OR 100mm NAIL THROUGH BATTEN RAFTER. (NAIL CAN BE DRIVEN THROUGH METAL BRACE)

BATTEN MUST OCCUR ON OR ADJACENT (WITHIN 200mm) TO METAL OVERLAP

NAILS AS PER MANUFACTURERS SPECIFICATION INTO TOP OF RAFTER 3 RINGSHANK NAILS

NAILS AS PER MANUFACTURERS SPECIFICATION INTO SIDE OF RAFTER 4 RINGSHANK NAILS

RAFTER

METAL ANGLE BRACE RAFTER BRACING

RETURN POINT CONNECTION FOR TILED ROOFS

RAFTER

NAILS AS PER MANUFACTURERS SPECIFICATION INTO TOP OF RAFTER 3 RINGSHANK NAILS

PURLIN MUST OCCUR ON OR ADJACENT (WITHIN 200mm) TO M E TA L B R A C E O V E R L A P.

STANDARD PURLIN TO RAFTER C O N N E C T I O N D E T A I L

NAILS AS PER MANUFACTURERS SPECIFICATION INTO SIDE OF RAFTER 4 RINGSHANK NAILS

RETURN POINT CONNECTION FOR SHEETED ROOFS

REV.: 131-05-2010

METAL ANGLE BRACE RAFTER BRACING

This

page

Inte

ntiona

lly

left

blank

METAL ANGLE BRACE WALL CONNECTION FOR CANTILEVER TRUSSES

METAL ANGLE BRACE WALL CONNECTION FOR STUB-END TRUSSES

HEEL END CONNECTION OF TOP CHORD BRACING WITH ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS

METAL


NAILED AS PER MANUSPECIFICATION 3 RINGSHANK NAILS INTO THE TOP, AND 4 RINGSHANK NAILS INTO T HE SIDE

FACTURERS

VERTICAL BRACE IN THE PLANE OF THE SUPPORT STRUT WEB. NOT REQUIRED IF BEAMFILL IS BUILT TO THE TOP OF THE TRUSS

WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF METAL BRACE

200mm LONG TIMBER BLOCK (TO MATCH WALL PLATE SIZE) FIXED TO TOP OF WALL PLATE WITH 6 No. 75mm WIRE NAILS

CONTINUE BRACE TO TRUSS HEEL IF CANTILEVER ISGREATER THAN 900mm

NAILED AS PER MANUFACTURERS SPECIFICATION

VERTICAL BRACE NOT REQUIRED IF BEAMFILL IS BUILT TO THE TOP OF THE TRUSS


200mm LONG TIMBER BLOCK

200mm LONG TIMBER BLOCKFOR HIGHER STUB

TRUSSES EXTEND METAL BRACE FURTHER AS SHOWN HERE

NAILED AS PER MANUFACTURERSSPECIFICATION 3 RINGSHANK NAILS INTO THE TOP, 6 RINGSHANK NAILS INTO THE SIDE



METAL BRACE (VERTICAL BRACE) TO BE AT A SLOPE LESS THAN 45° TO THE HORIZONTAL

WIDTH OF BRACED BAY DETERMINED BY ANGLE AND LENGTH OF METAL BRACE)


200mm LONG TIMBER BLOCK (TO SUIT WALL PLATE SIZE) FIXED TO TOP OF WALL PLATE WITH 6 No. 75mm WIRE NAILS



REV.: 131-05-2010

TOP CHORD BRACING OF “DUTCH” HIP END WITH METAL ANGLE BRACING FOR TILED ROOFS AND SHEETED ROOFS


EACH CONNEC-T I O N A S P E R MANUFACTURES SPECIFICATION W I D T H O F B R A C E D B AY

DETERMINED BY ANGLE AND LENGTH OF SPEEDBRACE

EACH CONNECTION AS PERMANUFACTURERS SPECIFICATION

ANGLE LESS THAN 45° IN PLANE OF ROOF

BATTEN/PURLIN (TYPICAL)

JAC

K

GIR

DER

F IRST CONNECTION MUST BE AT LEAST TWO B A T T E N / P U R L I N SPACES BELOW HIP TRUSS INTERSECTION

BRACED BAY

DUTCH GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS LESS THAN ¼ SPAN.STANDARD GABLE BRACING TO BE INSTALLED WHERE LOUVRE SECTION IS GREATER THAN ¼ SPAN.

REV.: 001-07-2001

BOTTOM CHORD BRACING WITH METAL BRACING FOR TILED ROOFS AND SHEETED ROOFS

ANGLE


TRUSSES

TIE

BE

AM

DETAILBELOW

38x76 (GRADE5) RUNNER

RUNNER SPLICE

WALLPLATEN A I L E D A S P E R MANUFACTURERS S P E C I F I C A T I O N 3 RINGSHANK NAILS

S I M I L A R C O N -F I G U R A T I O N ACROSS TRUSSES UP TO OPPOSITE WALLPLATE

PLAN VIEW

WEB

2 NO. 75mm WIRE NAILS (PER RUNNER)

38x76 (GRADE5) TIEBEAM RUNNERS


38x76 (GRADE5) TIEBEAM RUNNER EACH CONNECTION 2 No. 3.5mm 75mm NAILS

N A I L E D A S P E R M A N U F A C T U R E R S S P E C I F I C A T I O N , 3 RINGSHANK NAILS INTO THE TOP, 4 RINGSHANK NAILS INTO THE SIDE

METAL BRACE CONNECTION

METAL BRACE

TIEBEAM

METAL BRACE SPLICE

300 OVERLAP

IF REQUIRED, JOIN METAL BRACE USING 3 No. 2 . 5 m m W I R E T I E S T H R O U G H CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS

TIEBEAM BRACING WITH METAL BRACE FOR HEAVY TILED ROOFS

TRUSSES

TIE

BE

AM

DETAILBELOW

WALLPLATE

NAILED AS PER MANUFACTURERS SPECIFICATION 3 RINGSHANK NAILS

S I M I L A R C O N -FIGURATION ACROSS T R U S S E S U P T O OPPOSITE WALLPLATE

38x76 (GRADE5) RUNNER REFER TO DETAIL RS FOR RUNNER SPLICE

PLAN VIEW

38x76 (GRADE5) TIEBEAM RUNNERS



WEB

METAL BRACE

38x76 (GRADE5) TIEBEAM RUNNER EACH CONNECTION 2 No. 3.5mm 75mm NAILS

N A I L E D A S P E R M A N U F A C T U R E R S S P E C I F I C AT I O N , 3 RINGSHANK NAILS INTO THE TOP, 4 RINGSHANK NAILS INTO THE SIDE


TIEBEAM

METAL BRACE SPLICE

300 OVERLAP


TIEBEAM BRACING WITH METAL BRACE FOR LIGHT WEIGHT ROOFS

REV.: 001-07-2001

WEB BRACING WITH LIGHT GUAGE METAL BRACING FOR TILED ROOFS AND SHEETED ROOFS

ANGLE


BR

AC

ED

BAY DETAIL WC

METAL BRACE ON WEB

TIEBEAM MUST BE BRACED, EITHER BY FIXED BRANDERED CEILINGS OR ALTERNATIVELY WITH 38x76 (GRADE5) RUNNERS AND BRACING TO STANDARD DETAILS

DETAIL BELOW

DETAIL BELOW

PURLIN OR BATTEN

RAFTERS

38x76 (GRADE5) CONTINUOUS WEB RUNNER

METAL BRACE ON WEB

RUNNER SPLICE

WEB BRACING WITH METAL BRACE – BRACED BAY SPACING AS PER ROOF PLAN

METAL BRACE SPLICE

300 OVERLAP


METAL BRACE TO BE AS CLOSE TO END OF WEB INTERSECTION AS POSSIBLE

NAILED AS PER MANUFACTURES SPECIFICATION 3 RINGSHANK NAILS INTO TOP, 4 RINGSHANK NAILS INTO SIDE

WEB CONNECTION

WEB

38x76 (GRADE5) WEB RUNNERS


WEB RUNNER SPLICEWEB AND RUNNER CONNECTION

NAILED AS PER MANUFACTURERS SPECIFICATION 3 RINGSHANK NAILS

38x76 (GRADE5) RUNNER FIXED WITH 2 No. 75mm WIRE NAILS (CAN BE NAILED THROUGH METAL BRACE)

REV.: 001-07-2001

BOTTOM CHORD RESTRAINTS WITH “M” METAL RUNNERS FOR A MAXIMUM TRUSS SPACING OF 1 200mm

DETAIL REF.: MRUNNER 1PAGE 69

PROFILED METAL RUNNER

DETAIL BELOW2600 MAX

BR

AC

ED

BAY

METAL RUNNER SPLICE

BRACED BAY INTERVAL AS PER ROOF PLAN GENERAL NOTES:T I E B E A M B R A C I N G A N D RUNNERS ARE REQUIRED FOR LIGHT WEIGHT ROOFS, TRUSSES WITH SUSPENDED OR NO CEILINGS AND AS TEMPORARY BRACING UNTIL SUCH TIME THAT CEILINGS ARE INSTALLED.

TIEBEAM BRACING AND RUNNERSTILES – SPANS LESS THAN 11.5m • SHEETING – SPANS LESS THAN 15m

TRUSSES

WALLPLATE

PLAN VIEW – STANDARD HEEL PLAN VIEW – CANTILEVER HEEL

38x76 (GRADE5) BRACING MEMBERS TO BE NAILED TO TOP SIDE OF TIEBEAM OVER THREE OR FOUR TRUSSES AT APPROX 45°. 2 No. 75mm NAILS PER CONNECTION

38x76 (GRADE5) CANTILEVER BRACING MEMBER WITH METAL RUNNER AS SPECIFIED BY DESIGNER

PROFILED METAL RUNNER AT MAXIMUM 2600mm CENTRES AT CENTRES AS SPECIFIED BY THE DESIGNER 2 No. 75mm NAILS PER CONNECTIONT

IEB

EA

M

DETAIL BELOW DETAIL BELOW

TIEBEAM

RUNNER SPLICE

TIEBEAM


38x76 (GRADE5) BRACING MEMBER FIXED TOP SIDE OF TIEBEAM AS CLOSE AS POSSIBLE TO TIEBEAM RUNNER

2 No. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A BOTTOM CHORD, BY OVERLAPPING

TIEBEAM


EACH CONNECTION 2 No. 3.5mm WIRE NAILS

BRACING CONNECTION

REV.: 102-06-2010

WEB RESTRAINTS WITH PROFILED “M” METAL RUNNERS FOR A MAXIMUM TRUSS SPACING OF 1 200mm


METAL RUNNERS ON WEB AS REQUIRED REFER DETAIL BELOW

BR

AC

ED

BAY


RUNNER SPLICE

38x76 (GRADE5) CROSS BRACING TO BE FIXED TO THREE, FIVE OR SEVEN TRUSSES AT APPROX. 45° REFER TO DETAIL BELOW

PROFILED METAL RUNNER & TIMBER BRACING ON WEBS

2 No. 3.5mm DIA. x 75mm WIRE NAILS PER CONNECTION

TIEBEAMS

METAL RUNNER

TIEBEAMS

OR LESS

RAFTERS RAFTERS

PURLIN OR BATTEN PURLIN OR BATTEN

RUNNER & BRACINGOPPOSITE SIDES

RUNNER & BRACINGON THE SAME SIDE

38x76 (GRADE5) BRACING MEMBERS NAILED TO WEBS AT EACH BRACED BAY, OR AS PER THE DESIGNER

WEB

PURLIN OR BATTENRAFTER

WEB

TIEBEAM45°

OR LESS

2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A WEB, BY OVERLAPPING.

STEEL ‘M’ RUNNER

M E TA L R U N N E R (NEAR S IDE OF W E B ) C O N N E C T WITH 2 No. 75mm WIRE NAILS TO WEB OF EACH TRUSS

38x76 (GRADE5) CROSS BRACING (FAR SIDE OF WEB) AT EACH BRACED BAY OR AS INDICATED BY THE DESIGNER. CONNECT WITH 2 No. 75mm WIRE NAILS TO WEBS OF 4 OR 6 TRUSSES AT APPROX. 45°

WEB BRACING WHERE TWO RUNNERS OCCUR RUNNER SPLICE

38 X 76 (GRADE5) CROSS BRACING AT MEMBERS ACCESSIBLE FROM ONE SIDE ONLY, REFER TO DETAIL BELOW

TYPICAL CONNECTION

REV.: 1021-06-2010

TIEBEAM MUST BE BRACED, EITHER BY FIXED BRANDERED CEILINGS OR ALTERNATIVELY WITH 38x76 (GRADE5) R U N N E R S A N D B R A C I N G T O STANDARD DETAILS

BOTTOM CHORD BRACING WITH “M” RUNNERS & SPEEDBRACE” BRACINGFOR TILED AND SHEETED ROOFS – MAXIMUM TRUSS SPACING 1 200mm


3 RINGSHANK NAILS INTO THE TOP

SPLICE DETAIL

METAL RUNNER

SIMILAR CONFIGURATION ACROSS TRUSSES UP TO OPPOSITE WALLPLATE

2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A BOTTOM CHORD, BY OVERLAPPING.

METAL RUNNER

TIEBEAM

RUNNER SPLICE

METAL SPLICE

TYPICAL CONNECTION

TRUSSESWALLPLATE

3 PERM-FIX NAILS INTO THE TOP

DETAILBELOW

45°

45°

TIE

BE

AM

PLAN VIEW

METAL BRACE SPLICE

METAL BRACE

TIEBEAM


M E T A L R U N N E R E A C H CONNECTION 2 No. 75mm NAILS


TIEBEAM BRACING WITH METAL BRACING & RUNNERS FOR HEAVY TILED ROOFS

IF REQUIRED, JOIN METAL BRACE USING 3 No. 2.5mm WIRE TIES THROUGH CORRESPONDING HOLES AND TWIST TIGHTLY WITH PLIERS

300 OVERLAP

3 RINGSHANK N A I L S I N T O THE TOP

METAL RUNNER

SIMILAR CONFIGURATION ACROSS TRUSSES UP TO OPPOSITE WALLPLATE

TRUSSESWALLPLATE

DETAILBELOW

45°

TIE

BE

AM

PLAN VIEW

2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS S P L I C E O N A B O T TO M CHORD, BY OVERLAPPING.

TIEBEAM

METAL RUNNER

RUNNER SPLICE

METAL RUNNERTYPICAL CONNECTION


M E T A L R U N N E R E A C H CONNECTION 2 No. 75mm NAILS TIEBEAM


METAL BRACE300 OVERLAP

METAL BRACE CONNECTIONMETAL BRACE SPLICE

TIEBEAM BRACING WITH METAL BRACING & RUNNERS FOR LIGHT WEIGHT ROOFS

REV.: 001-07-2001

WEB BRACING WITH “M” RUNNERS & METAL ANGLE BRACING FOR TILED AND SHEETING ROOFS WITH A MAXIMUM TRUSS SPACING OF 1 200mm

DETAIL REF.: MRUNNER 4PAGE 72REV.: 1

02-06-2010

RAFTERS

METAL BRACE ON WEB

METAL RUNNER

RUNNER SPLICE

BRACE BAY SPACING AS PER ROOF PLAN

PURLIN OR BATTEN

DETAILBELOW

BRANDERING

DETAIL BELOW

TIEBEAM MUST BE BRACED, EITHER BY FIXED BRANDERED CEILINGS OR ALTERNATIVELY WITH RUNNERS AND BRACING TO STANDARD DETAILS

DETAIL BELOW

BR

AC

ED

BAY

NAILED AS PER MANUFACTURERS SPECIFICATION 3 R I N G S H A N K NAILS, INTO TOP, 4 RINGSHANK NAILS INTO SIDE

METAL BRACE TO BE AS CLOSE TO END OF WEB INTERSECTION AS POSSIBLE

METAL RUNNERS AND BRACING ON WEBS

TYPICALCONNECTION

METAL BRACE ON WEB METAL RUNNER

METAL BRACE SPLICE


300mm OVERLAP

WEB CONNECTION

2 NO. 3.5mm DIA. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A WEB, BY OVERLAPPING.

WEB

METAL RUNNER

WEB AND RUNNER CONNECTION RUNNER SPLICE

METAL RUNNER FIXED WITH 2 No. 75mm WIRE NAILS (CAN BE NAILED T H R O U G H M E TA L B R A C E . )

NAILED AS PER MANUFACTURERS SPECIFICATION, 3 RINGSHANK NAILS INTO TOP, 4 RINGSHANK NAILS INTO SIDE

RAFTERS

PURLIN OR BATTEN

BRANDERING

TIEBEAM RUNNER

WEB RESTRAINTS WITH “M” RUNNERS & TIMBER BRACING WHERE THE RUNNER AND BRACING CROSS AWAY FROM THE TRUSS. MAXIMUM TRUSS SPACING OF 1 200mm


BRACING BLOCK WITH THE SAME DEPTH AS THE WEB, CONNECTED WITH 2 No. 75mm WIRE NAILS AT EACH END INTO WEB AND CONNECTED TO METAL RUNNER WITH 10 No. 75mm NAILS. (5 NO ON RIDGE AND 5 NO IN GROOVE AS CONNECTION ABOVE.)

METAL RUNNER WITH TIMBER BRACING CONNECTION WHERE RUNNERS AND BRACING DO NOT INTERSECT ON A TRUSS MEMBER

SEE DETAIL RS

WEB

TYPICAL CONNECTION

38x76 (GRADE5) BRACING MEMBER FIXED TO UNDERSIDE OF WEB WITH 2 NO. 3.5mm DIA. x 75mm WIRE NAILS PER W E B C O N N E C T I O N & B L O C K CONNECTION.

METAL RUNNERMETAL RUNNER

PURLIN OR BATTEN

RAFTERS2 NO. 75mm WIRE NAILS PER CONNECTION.

38x76 (GRADE5) CROSS BRACING MEMBERS NAILED TO WEBS AT EACH BRACED BAY, OR AS INDICATED BY THE DESIGNER

METAL RUNNER

TIEBEAMS

±45°

BRACE FIXING DETAIL

RUNNER SPLICE

METAL RUNNER

WEB

2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON A WEB, BY OVERLAPPING.

REV.: 102-06-2010

WEB RESTRAINTS WITH “M” RUNNERS & METAL ANGLE BRACING WHERE THE RUNNER AND BRACING CROSS AWAY FROM THE TRUSS MAXIMUM TRUSS SPACING OF 1 200mm


SEE DETAIL BELOW

METAL RUNNER

METAL RUNNER

WEB

TYPICAL CONNECTION

BRACING BLOCK WITH THE SAME DEPTH AS THE WEB, CONNECTED WITH 2 NO. 75mm WIRE NAILS AT E A C H E N D I N T O W E B A N D CONNECTED TO METAL RUNNER WITH 10 No. 75mm NAILS. (5 No. ON RIDGE AND 5 NO IN GROOVE AS CONNECTED ABOVE.)

METAL RUNNER & BRACING CONNECTION WHERE RUNNERS AND BRACING DO NOT INTERSECT ON A TRUSS MEMBER

METAL RUNNER


PURLIN OR BATTEN

RAFTERS

TIEBEAMSDETAIL WB

METAL BRACING NAILED TO TOP CHORDS AT EACH BRACED BAY, OR AS INDICATED BY THE DESIGNER

BRACE FIXING DETAIL

WEB

2 NO. 75mm WIRE NAILS AT EACH CONNECTION. ALWAYS SPLICE ON WEB, BY OVERLAPPING.

METAL RUNNER

RUNNER SPLICE

NAILED AS PER MANUFACTURERS S P E C I F I C AT I O N

REV.: 102-06-2010

Part 3 Site Inspection Checklist

PAGE 75

A: PROJECT INFORMATION1. NHBRC Enrolment Number

2. Site Address

3. Erf

4. Builders Name, NHBRC Reg. No. & Tel. No.

5. Owner's Name & Tel.

6. Fabricator & Tel.

B: GENERAL ITEM CONFORMS T0 DESIGN COMMENTS

1. Loading Information N/A YES NO

2. Truss / Beam to plan N/A YES NO

3. Hangers / cleats to plan N/A YES NO

4. Dimensions to building N/A YES NO

5. Overhang dimensions N/A YES NO

C: STRUCTURAL ITEM CONFORMS TO DESIGN COMMENTS

1. TRUSSES

a. Spacing N/A YES NO

b. Plumbness N/A YES NO

c. Plies as per drawing N/A YES NO

d. Nailing of multiple plies N/A YES NO

e. Internal supports N/A YES NO

f. Holding down detail N/A YES NO

g. Plate positioning N/A YES NO

h. Timber grades N/A YES NO

i. Timber treatment (coast) N/A YES NO

2. GIRDERS

a. Connections N/A YES NO

b. Nailing of connections N/A YES NO

c. Nailing and bolting of

multiple plies N/A YES NO

d. T-bracing (1/2/3/4 ply) N/A YES NO

e. Connection of batten/ N/A YES NO

purlin to each ply

f. Torsional restraint N/A YES NO

g. Truss to girder strapping N/A YES NO

3. SPECIAL TRUSSES

a. Valley support detail N/A YES NO

b. Valley runners N/A YES NO

c. Valley web bracing N/A YES NO

d. Cantilever trusses N/A YES NO

B.C. runners & bracing

C. STRUCTURAL ITEM CONFORMS TO DESIGN COMMENTS 4. TOP CHORD BRACING

a. Size N/A YES NO

b. Connections (nailing) N/A YES NO

c. Shelf details and fixing N/A YES NO

d. Prefab-frames apex con. N/A YES NO

e. Prefab-frame to truss con. N/A YES NO

f. Prefab-frame vertical N/A YES NO

bracing installed

5. BOTTOM CHORD BRACING

a. Size N/A YES NO

b. Connections N/A YES NO

c. Spacing N/A YES NO

d. Splicing N/A YES NO

e. Cross bracing installed N/A YES NO

f. Prefab-frames installed N/A YES NO

g. Ceilings directly N/A YES NO

attached (heavy roofs)

6. WEB BRACING

a. Size N/A YES NO

b. Connections N/A YES NO

c. Cross bracing N/A YES NO

d. Number per web N/A YES NO

e. T-Bracing N/A YES NO

7. PURLINS / BATTENS

a. Size N/A YES NO

b. Spacing N/A YES NO

c. Splicing N/A YES NO

d. Connections N/A YES NO

e. Holding down details N/A YES NO

8. GENERAL STRUCTURAL DETAILS

a. Holding down details (wall) N/A YES NO

b. Special bracing for hip/ N/A YES NO

valley crank situation

c. Batten / Purlin to 45 deg. N/A YES NO

hip girder connection

d. Special loading condition N/A YES NO

(geysers, etc. )

e. Sliding shoes where specified N/A YES NO

f. Site remedials / repairs N/A YES NO

g. Cantilever hip support N/A YES NO

conditions (eave beam)

h. Piggy back connections N/A YES NO

i. Piggy back bracing (flat part) N/A YES NO

j. Site splicing N/A YES NO

INDEXPart Four Standard Remedials

PAGE 77

Page Detail Ref. Discription

83 Remedial Repair to a broken chords

84 Remedial2 Repair to a broken web

85 Remedial 3 Incorrect cantilevers

86 Remedial 4 Trusses built into internal walls

87 Remedial 5 Truss overhangs too short

87 Remedial 6 Mono-pitch bottom chord extension

88 Remedial 7 Bowed webs

88 Remedial 8 Notching of members

89 Remedial 9 Crank hip/val. girder top chord restraint

DETAIL REF.: REMEDIAL 1PAGE 78

REPAIR TO CRACKED OR BROKEN CHORDS NB: ONLY FOR SINGLE PLY TRUSSES,

ONE BREAK PER TRUSS USE ONLY M12 BOLTS AND MIN. 36X4mm WASHERS

300

MAX. TENSION FORCE = 15.kN

NODE

min.

NTS 9090 NTS 60 60 150 150 60 60DAMAGE

min. ZONE

NODE

36X149 = 5 M12 BOLTS EACH SIDE

75

300 NODE TO NODE 300


MAX. TENSION FORCE = 12.4 kNMAX. TENSION

FORCE = 12.4kN

NAILED WITH 75mm WIRE NAILS AT 150mm STAGGERED CENTRESDAMAGED

ZONEADDITIONAL MEMBER 300mm PAST NODE OR TO END OF TRUSS USE SAME SIZE AND GRADE AS BROKEN TRUSS MEMBER

END

NODE TO NODE

NAIL WITH 75mm WIRE NAILS AT 150mm STAGGERED CENTRES

DAMAGED ZONE

A D D I T I O N A L MEMBER 300mm PAST NODE OR TO END OF TRUSS USE SAME SIZE AND GRADE AS BROKEN TRUSS MEMBER

BOLTARRANGEMENT AS BELOW

BOLTARRANGEMENT AS BELOW

NODENODE

55

56

50

50

50

75


NODE

90NTSmin.150DAMAGE

ZONENODE

90 150NTS 60 60 6060

MAX. TENSION FORCE = 20.kN

60

10

56

0

150 60 60DAMAGEZONE

150606090 NTS 90NTS

REV.: 1 07-06-2010

NB: A REMEDIAL DETAIL PROVIDED BY AN ENGINEER WILL REPLACE THESE DETAILS


REPAIR TO CRACKED OR BROKEN WEB NB: ONLY ONE REPAIR PER TRUSS; ONLY FOR SINGLE PLY TRUSSES; ONLY FOR 38X76 OR 38X114 SIZE WEBS

DETAIL A

DETAIL B

ONE ADDITIONAL 38X152 (GRADE5) WEB FIXED OVER BROKEN WEB, BOLTED AT THE ENDS INTO THE TOP AND BOTTOM CHORDS WITH TWO M12 BOLTS, ONE M12 BOLT INTO THE WEB AT EACH END AND NAILED LONG THE LENGTH OF THE WEB

DETAIL A

3775

37

BREAKIN WEB

2/3

1/3

ONE M12 BOLT WITH 36x4mm WASHERS BOTH SIDES INTO WEB

TOP EDGEDISTANCE

TWO M12 BOLTS WITH 36x4mm WASHERS BOTH SIDES INTO TOP CHORD

7638

114

MIN. 90mm

NAIL WITH 75 WIRE NAILS AT 300mm CENTRES TO THE ENTIRE WEB LENGTH

DETAIL B

ONE M12 BOLT WITH 36x4mm WASHERS BOTH SIDES INTO WEB

BOTTOM EDGEDISTANCE

1/3

2/3

TWO M12 BOLTS WITH 36x4mm WASHERS BOTH S I D E S I N T O BOTTOM CHORD

76

38

3775

37

REV.: 0 01-07-2001

REMEDIAL TO FIX INCORRECTLY CANTILEVERED TRUSSES


38X114 (GRADE5) MAX 1.5m 38X152 (GRADE5) MAX 2.1m WEB CUT TO A TIGHT FIT BETWEEN CHORDS

P R E - P U N C H E D S T R A P LOOP 10 CLOUT NAILS INTO EACH MEMBER, BOTH SIDES

PRE-PUNCHED STRAP LOOP 10 CLOUT NAILS I N T O E A C H M E M B E R , BOTH SIDES

VERY IMPORTANT:THIS JOINT PLATE MUST BE CHECKED

CANTILEVER TRUSS ERECTED THE WRONG WAY

38X114 (GRADE5) ADDITIONAL WEB CUT TO TIGHT FIT BETWEEN CHORDS (NO GAPS)

38 X 114 (GRADE 5) GUSSET NAILED WITH 4-75mm NAILS PER MEMBER CONNECTED

MAXIMUM ¼ TRUSS SPAN UP TO 2000mm

LONG CANTILEVER DETAIL

M12 BOLTWITH 36X4mm WASHERS EACH SIDE

38X152 (GRADE5) ADDITIONAL WEB CUT TO TIGHT FIT BETWEEN CHORDS (NO GAPS)

38X114 (GRADE5) GUSSET NAILED WITH FOUR NAILS PER MEMBER CONNECTED M12 BOLT WITH

36X4mm WASHERS EACH SIDE

SHORT CANTILEVER DETAIL

VERY IMPORTANT:THIS JOINT PLATE MUST BE CHECKED

REV.: 0 01-07-2001

M12 BOLT WITH 36X4mm WASHERS EACH SIDE

REMEDIAL TO FIX COMPLETELY BRICKED IN TRUSSESi.e. INTERNAL SUPPORT POINT WITHOUT A TRUSS NODE


NB: IF ADDITIONAL WEBS EXCEED 1.8m IN LENGTH, WEB T-BRACING MUST BE INSTALLED

BOTH TOP AND BOTTOM CHORDS COMPLETELY BUILT IN BY A LOAD BEARING INTERNAL WALL. NO TRUSS NODE ADJACENT TO EITHER TOP OR BOTTOM CHORD SUPPORT POINT AT INTERNAL WALL.

TWO M12 BOLTS WITH 36X4mm WASHERS EACH SIDE

TWO M12 BOLTS W I T H 3 6 X 4 m m WASHERS EACH SIDE

TRUSS TOP CHORD SUPPORTED HERE


37 75

37

84

84

NAIL ADD. WEB WITH 75mm NAILS W H E R E POSSIBLE

38X152 (GRADE5) ADDITIONAL WEB

38X152 (GRADE5) ADDITIONAL WEB

84


T R U S S B O T T O M CHORD SUPPORTED HERE

SEE ALSO BROKEN WEB REMEDIAL – PAGE 84

REV.: 1 09-06-2010

REMEDIAL TO FIX MONO-PITCH TRUSSES / HIP JACK TRUSSESWHICH ARE TOO SHORT – MAXIMUM EXTENSION 300mmS H E E T E D A N D T I L E D R O O F S U P T O 6 0 k g / s q . m

REMEDIAL TO FIX TRUSSES WHERE OVERHANGS ARE TOO SHORTMAXIMUM 650mm OVERHANG (i.e. TWO CONCRETE TILES)

DETAIL REF.: REMEDIAL 5&6PAGE 82

USE SAME SIZE AND GRADE TIMBER AS TRUSS TOP CHORD FOR ADD-ON OVERHANG WHICH MUST EXTEND TO PAST THE FIRST TOP CHORD NODE

NOTE: CONSULT THE SYSTEM ENGINEER WHEN LONGER THAN 650mm OVERHANGS ARE NEEDED.

NAIL WITH 75mm NAILS AT 150mm S T A G G E R E D CENTRES

TRIM TRUSS CHORD TO WITHIN WALL SO THAT T H E B E A M F I L L I N G C A N B E D O N E

NOTE: CONSULT THE SYSTEM ENGINEER WHEN LONGER THAN 300mm NIBS ARE NEEDED OR WHEN TOTAL SPAN EXCEEDS 4500mm.

M12 BOLT WITH 36X4mm WASHERS EACH SIDE

STANDARD FIXING DETAIL

USE 38X114 (GRADE5/7) UP TO 3 5 0 0 m m T O T A L S P A NUSE 38X152 (GRADE5/7) UP TO 4 5 0 0 m m T O T A L S P A N

ADDITIONAL BOTTOM CHORD MUST EXTEND TO PAST THE SECOND BOTTOM CHORD NODE

S U P P O R T P O I N T T R U S S HANGER OR WALL PLATEMAX. 200mm NIB

(GRADE5) TIMBER MAX. 300mm NIB GRADE7 TIMBER

NAIL WITH 75mm NAILS AT 150mm S T A G G E R E D CENTRES

MAXIMUM TOTAL SPAN

REV.: 1 11-06-2010

150mm

150mm

REMEDIAL TO FIX A WEB WITH EXCESSIVE BOWING(i.e. THE WEB IS BOWED BEFORE ANY LOAD IS APPLIED)

REMEDIAL TO NOTCH TIMBER TO ACHIEVE REQUIRED LEVELS

DETAIL REF.: REMEDIAL 7&8PAGE 83

NAILED ON WEB T-BRACE SEE ALSO DETAIL WEB 2 ON PAGE 61

STRAIGHTEN BOWED WEB AS MUCH AS POSSIBLE AND THEN NAIL ON 38X114 (GRADE5) WEB T-BRACE

38x114 (GRADE5) CONTINUOUS WEB STIFFENER, NAILED ALONG FULL LENGTH OF WEB WITH 3.5mm DIA. X 75mm NAILS AT 300mm CENTERS

DETAIL

WEB

X-X T-1

FIX TWO H. CLIPS

FLY RAFTER

3 8 X 3 8 B L O C K 200mm LONG EACH SIDE FIXED WITH TWO 75mm NAILS

FIX TWO H. CHIPS BEFORE BLOCK IS INSTALLED

38X76 BLOCK 200mm LONG FIXED WITH FOUR 75mm NAILS

TRUNCATED TOP CHORD

BATTENS / PURLINS: DO NOT NOTCH THE TRUSS TOP CHORD NOTCH THE BATTEN / PURLIN

IMPORTANT: ALWAYS NOTCH THE LESSER MEMBER.HIPS: DO NOT NOTCH THE TRUNCATED GIRDER / TRUSS NOTCH THE FLY RAFTER.

NAIL BATTEN TO EACH BLOCK

F I X H . C L I P S BEFORE BLOCK

50X76 BLOCK 200mm LONG EACH SIDE FIXED WITH FOUR 100mm NAILS TOP CHORD

5 0 X 7 6PURLIN

TOP CHORD

REV.: 0 11-06-2010


REMEDIAL / ALTERNATIVE GIRDER TOP CHORD RESTRAINT FOR VALLEY SIDE OF CRANK

MAX. CENTRES AS NOTED BELOW

TENSIONED PRE-PUNCHED STRAP OR METAL ANGLE BRACING TO BE FIXED TO TOP OF GIRDER & TRUSS TOP CHORDS WITH 2 NO. CLOUT NAILS AT EACH CONNECTION. ENDS TO BE FOLDED OVER AND FIXED WITH A FURTHER 3 NO. CLOUT NAILS

END FOLDED OVER CHORD EDGE

SECTION B-B

STANDARD TOP CHORD BRACING

HIP SIDE

GIRDER TRUSSMAIN TRUSSES

CUT-BACKTRUSSES

RIDGE LINE

RIDGE LINE


GIRDER TRUSS

VALLEY SIDE



PURLIN ORBATTEN


TRUSS

GIRDERTRUSS


SECTION A-A

NOTES:TENSIONED PRE-PUNCHED STRAP OR METAL ANGLE BRACING TO BE FIXED TO TOP OF GIRDER & TRUSS TOP CHORDS WITH 2 NO. CLOUT NAILS AT EACH CONNECTION.

ENDS TO BE FOLDED OVER AND FIXED WITH A FURTHER 4 NO. CLOUT NAILS.

THE STRAP MUST EXTEND OVER A MINIMUM OF FULL THREE TRUSSES.

THE TRUSS TOP CHORDS MUST ALWAYS BE BRACED ON BOTH SIDES OF THE VALLEY

RUNNER CENTRESLIGHT ROOF COVERING = 1200 MAX.HEAVY ROOF COVERING = 600 MAX.


REV.: 0 01-04-2003

GLOSSARY OF TERMS AND DEFINITIONS

Apex: The top of the truss where the two top chords meet.

Batten: Small section timber members (usually 38x38 or 38x50) nailed across the top chords at a spacing of less than 540mm to carry concrete tiles, slates, metal tiles etc.

Binder: See Runner.

Block Splice: Nailed timber block used to join butting bracing members and purlins. Bottom Cord: Also tie-beam. That part of the truss that forms the bottom edge, and

joins the two heel joints, supports the ceiling, and usually flat . Sloped in scissor trusses. Abbreviated B.C.

Braced Bay: That section of roof where the diagonal bracing members are fixed. Bracket: See Cleat.

Bracing: Timber members (or of other material e.g. light gauge mild steel) fixed to several adjacent trusses usually at a 45 degree angle to make the roof stable, and to prevent buckling of compression members.

Brandering: Similar to battens but fixed to the bottom chord, to support the ceiling.

Cantilever: When the truss support on the bottom chord is some distance inside the heel joint.

Clear Span: The distance between the supporting walls (or inside face of the supports). See also span.

Cleat: Mild steel heavy-duty bracket fixed with bolts and used to support large heavy trusses / girder on a girder.

Crank: When the support wall direction change is less than 90 degrees. The roof forms a bastard hip on one side, and a valley on the other in double-pitched roofs.

Clout Nails: Wire nails 32mm long, 2.8mm in diameter, with a large head used to fix hangers, hurricane clips and pre-punched strapping. (i.e. light gauge metal to wood)

Double Pitch: Trusses where the top chords slope up to the apex at the same angles (pitches) from both ends of the truss.

Dual Pitch: Trusses where the top chords slope up to the apex at two different angles (pitch) from each end of the truss.

Dutch Hip: A hip end where the end slope does not reach the apex but the top part of the hip forms a small gable. Also called a louvre hip.

Fly Rafter: The top chord overhang at the high end of the mono pitch jack

truss which extends over the truncated hip girder and trusses. (May also be a separate loose rafter)

Gable: When the building end is vertical, the same shape as the truss, usually constructed of brickwork.

Gablet: Small gable on the roof slope, usually formed by a valley set.

Girder Truss: A truss (single or multiple ply) used to support other trusses.

Hanger: A U-shaped bracket made of light gauge galvanized mild steel used to support trusses on a girder, usually fixed with 32mm clout nails or similar. When specified, may also be fixed with bolts and 36x36X4mm washers.

Part Five

Heel: The truss end joint where the top and bottom chords connect, or where the end web joins the bottom chord in stub and mono-pitch trusses.

Heel Shelf: A means of fixing the diagonal top chord bracing at the wall plate using timber, bolts, washers, nailed hurricane clips and thrust block.

Hip: When the building ends in a sloped roof (as compared to a gable).

Hoop Iron: Galvanized metal strips built into brickwork used to hold down trusses.

Hurricane Clip: A light gauge galvanized mild steel angle bracket used to fix two timber members at 90 degrees to each other.

Jack Rafter: The smallest end part of a hip corner construction using only single pieces of timber (loose rafter).

Jack Truss: The mono pitch trusses of the hip, which are supported at the high end by the hip girders.

Member: A part, or component, which together with other members make up the structure. (i.e. truss members are the top chords, bottom chords and webs which form the truss)

Mono Pitch: A truss where there is only one rafter slope. (half of a double pitch truss)

Multiple Plies: Two to four trusses nailed and bolted together to form one unit. Usually as girders.

Nails: See Clout nails and Wire nails.

Nib: Extensions of the bottom chord past the truss end, usually to support in brickwork or on a truss hanger.

Node: Also node point or joint. The places on the truss where two or more truss members are connected to each other (but not chord splices)

Overhang: That part of the truss top chord that extends past the truss heel. Measured horizontally from the truss heel on the truss, but also from the outside wall face on the building.

Pitch: Also slope, the angle between the top chord and the horizontal line from the support point. Can also be the slope of the bottom chord in a scissors truss.

Plumb: Trusses to be in a straight vertical line, i.e. 90 degrees to the floor (horizontal) level and parallel to the gable wall.

Plumb Cut: Top chord overhangs cut off vertical, i.e. up / down, to allow the fixing of fascia boards and/or square gutters at the roof truss ends.

Polynesian: Trusses with a pitch change in each top chord from a lower pitch to steeper pitch going from heel to apex.

Purlin: Timber sections (usually 50x76) fixed across the top chords at a spacing of up to 1200mm to carry metal and fibre cement sheeting.

Rafter: See Top Chord.

Runner: Bracing members that are run continuously through the entire roof or set of the same trusses, to connect the same point of each truss. Runners must be diagonally braced at every braced bay to have any effect on the stability of the roof structure.

Spacing: The distance between the centres of two of the same elements, i.e. trusses.

Span: Truss span is the distance along the bottom chord between the truss ends (heels). See also Clear Span.

Splice: The joining of two members in a straight line so that these members act as one component, e.g. truss top and bottom chords, and runners. Truss webs may not be spliced (Unless approved by an engineer).

Stub End: Also stub heel. Where the top and bottom chords are some distance apart and connected by the first truss web.

Support: The point where the truss is carried by the building below. The wall (or beam) should be built to carry the truss, and there should always be a node at the support point of the truss.

Tie Beam: See Bottom Chord.

Top Chord: Also rafter. That part of the truss, which forms the top edge, usually at a slope and has the battens or purlins fixed to it to carry the roof covering. Abbreviated: T.C.

Truncated: A hip truss or girder, which has a part flat top chord, at a height so that the fly rafters of the jack trusses can just pass over the top. Also the lower truss of the 'piggy-back' or 'top-hat' truss system, i.e. when large high trusses are split horizontally into two halves for manufacturing, handling and transport purposes.

Truss: A number of timber members joined together in a triangular pattern to form a sturdy frame to carry the roof covering and any other loads that it is designed for.

Labels: All trusses should be labeled on the roof layout plan and on the truss itself. Common labels are A1, TR1, GX1, TG1, HG1, HM1, etc.

Under-gable: Formed by two adjacent double pitched trusses of different spans, where both heels are on the same wall on one side only.

Valley: A set of special trusses with decreasing spans which are supported on the length of their bottom chord by the top chords of the trusses underneath and fixed at 90 degrees to these trusses.

Valley Truss: A truss, which is supported by other trusses underneath.

Wall Plate: A timber member laid flat over the supporting wall to level the bearing surface and spread the load.

Webs: The truss members that connect the top and bottom chords, usually in a triangular pattern.

Wedges: Triangular timber blocks used in pairs to level the trusses.

Wire Nails: 75mm or 100mm long, 3 to 4mm diameter wire nails with a head, used to connect two timber members together.

Wire Ties: Two strands of wire built into the brickwork used to hold down the trusses.

TYPICAL STUB HEEL TYPICAL CANTILEVER SUPPORT

DETAIL REF.: GLOSSARY 1PAGE 88REV.: 0

01-07-2001

NODE BOTTOM CHORD(TIE BEAM)(TRUSS MEMBER)BOTTOM CHORD OR TRUSS SPAN

HOOP IRONWALL PLATE

CEILINGBRANDERING

PITCHSLOPE

WEB

WEB

WEB (TRUSSMEMBER)TILTING

BATTEN

HEELNODE

BATTENS

NODE

TOP CHORD

( R A F T E R )

( TR

US

S

ME M

B E R )

APEX NODETOP CHORD

( R A F T E R )

( TR

US

S

ME M

B E R )NODE

BATTENS

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DETAIL REF.: TYPICAL CORBELLING DETAILPAGE 89REV.: 0

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05-11-2010

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DETAIL REF.: GEYSER PERPENDICULARPAGE 91REV.: 1

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DETAIL REF.: GEYSERREV.: 0

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NOTES

PAGE 93

Part Six

Annexure A

FULL NAME OF APPLICANT: ..................................................................................

NAME LEGAL BODY/ERECTOR’S NAME: .............................................................

TRADING NAME (if applicable): ..............................................................................

NAME TO APPEAR ON CERTIFICATE: ..................................................................

STREET ADDRESS: .................................................................................................

.............................................................................................. CODE: .....................

POSTAL ADDRESS: ..............................................................................................

.............................................................................................. CODE: .....................

TEL NO: ( ) ..................................... FAX NO: ( ) ....................................

CELL NO: .............................................. E-mail: ...................................................

Signature of Applicant: ............................................... Date: ...................................

02 12 2010

Prepared for the industry by The Institute for Timber Construction South Africa

SAFCA Building6 Hulley RoadPO Box 686Isando, 1600Tel: +27 (0) 11 974 1061Fax: +27 (0) 11 392 6155Email: [email protected]

Head OfficeSouth Eastern CapePO Box 2038Knysna, 6750Ian KeeveyTel: +27 (0) 44 382 7360Fax: +27 (0) 44 382 7360Email: [email protected]

RegionsKwazulu-NatalPO Box 37515Overport, 4067Colin ArmstrongTel: +27 (0) 31 209 2045Fax: +27 (0) 31 209 2046Email: [email protected]

Western CapeP.O. Box 60697Tabelview, 7439Graham ButlerTel: +27 (0) 21 557 6851 Fax: +27 (0) 21 557 9195 E-mail: [email protected]

Branch CommitteesFree StatePiet BothmaTel: +27 (0) 51 435 6518

MpumalangaPeet FourieTel: +27 (0) 13 741 4437

LimpopoAndre van der KolffTel: +27 (0) 15 291 3104

roof erector’s handbook - dezzo roofing · with the roof layout supplied by the prefabricated...

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